What is "lockdown"

also lock-down, from 1940s in various mechanical senses, from lock (v.) + down (adv.). Prison sense is by 1975, American English.

n. 1 (''in an institution, such as a prison or school'') The confinement of people in their own rooms (or cells) as a security measure after a disturbance 2 (context US English) A contrivance to fasten logs together in rafting.

n. the act of confining prisoners to their cells (usually to regain control during a riot)

There are several definitions for the term lockdown, the most common of which pertains to a state of containment or a restriction of progression. A lockdown is an emergency protocol to prevent people or information from escaping, which usually can only be ordered by someone in command. Lockdowns are also used to protect people inside a facility or, for example, a computing system, from a dangerous external event.

There may be various levels of lockdown. For example, in the case of buildings, a partial lockdown means that the doors leading outside of the building are locked and people may not exit or enter the building. A full lockdown means that people must stay where they are and may not exit or enter a classroom, apartment unit, store unit, an office space, condo unit or the building. If people are in a hallway they must go into the nearest classroom, apartment unit, condo unit, office space or store unit.

"Lockdown" is the third episode for season eight of the Canadian-American military science fiction television series Stargate SG-1. The episode was written by Joseph Mallozzi and Paul Mullie, and directed by Will Waring. This was the only episode in the eighth season to receive a syndication rating, but was also one of the lowest rated of the season on the Nielsen household ratings. The episode got strong reviews from major media publishers worldwide.

"Lockdown" is about the discovery of an outbreak of disease which first occurred in the Russian Federation, but later on infects personnel of Stargate Command. The outbreak is later revealed to be the ethereal remains of Anubis. At the same time, Jack O'Neill stops the recruiting process for SG-1 leaving Samantha Carter as the new leader of SG-1 throughout season 8. Anubis tries to take new hosts but is eventually defeated and forced to a destination chosen by Carter, a frozen, barren planet.

A lockdown is an emergency response to prevent escape or intrusion.

Lockdown or Lock Down may also refer to:

• lockdown, alternative term for lock-on, whereby protesters to make it difficult to remove them from their place of protest

"Lockdown" is the 42nd episode of Lost. It is the 17th episode of the second season. The episode was directed by Stephen Williams, and written by Carlton Cuse and Damon Lindelof. It first aired on March 29, 2006, on ABC. The character of John Locke is featured in the episode's flashbacks.

Lockdown is a 2000 drama film, directed by John Luessenhop and starring Richard T. Jones, Clifton Powell, David "Shark" Fralick, and Master P. The film was produced by Master's P's No Limit Films, a division of his No Limit Records label.

Lockdown (2005) was a professional wrestling pay-per-view (PPV) event produced by the Total Nonstop Action Wrestling (TNA) promotion, which took place on April 24, 2005, at the TNA Impact! Zone in Orlando, Florida. It was the first event under the Lockdown chronology and the fourth event in the 2005 TNA PPV schedule. Eight professional wrestling matches and one pre-show match were featured on the event's card. Every match took place inside a six sided steel structure known as the Six Sides of Steel. As a result, Lockdown was the first-ever all steel cage event held in professional wrestling.

The main event was for a NWA World Heavyweight Championship match at TNA's Hard Justice PPV event between A.J. Styles and Abyss. Styles won the match, thus earning his title shot against then-champion Jeff Jarrett at Hard Justice. TNA held the first-ever Lethal Lockdown match during the event. It pitted Team Nash ( Diamond Dallas Page, Sean Waltman, and B.G. James) against Team Jarrett (Jeff Jarrett, Monty Brown, and The Outlaw), which Team Nash won. Kevin Nash was originally supposed to take part in the match but was removed due to sickness and was replaced with James. The TNA X Division Championship defense by Christopher Daniels against Elix Skipper was another highly promoted match for the event. Daniels won the bout and successfully retained the title. Jeff Hardy versus Raven in a Six Sides of Steel Tables match was featured on the card, which Hardy won.

This event marked the introduction of the Lethal Lockdown and Xscape matches, which became annually held matches at future Lockdown events. During the event, Chris Candido received an injury during his tag team match with Lance Hoyt against Apolo and Sonny Siaki, which later led to Candido's death from a blood clot as a result of surgery for the injury. Jason Clevett of the professional wrestling section of the Canadian Online Explorer rated the event a 6 out of 10, two marks lower than the 2006 event's ranking by Chris Sokol.

Lockdown (2006) was a professional wrestling pay-per-view (PPV) event produced by Total Nonstop Action Wrestling (TNA), which took place on April 23, 2006 from the Impact Zone in Orlando, Florida. It was the second annual event under the Lockdown chronology. Eight matches were featured on the event's card. In the tradition of Lockdown events, every match took place inside a steel structure with six sides, known as Six Sides of Steel. This event also marked the TNA debut of Christy Hemme. The event was featured in an episode of House.

Lockdown (2007) was a professional wrestling pay-per-view (PPV) event produced by Total Nonstop Action Wrestling, which took place on April 15, 2007 at the Family Arena in Saint Charles, Missouri. This was the second monthly pay-per-view, after Bound for Glory (2006), to be held outside Orlando, Florida. It was the third annual event under the Lockdown chronology. Eight professional wrestling matches were featured on the event's card. In the tradition of Lockdown events, every match took place inside a steel structure with six sides, known as Six Sides of Steel. It was the final TNA Wrestling pay-per-view event to officially feature National Wrestling Alliance championships (although the physical belts were used at the following Sacrifice event, the titles had been vacated by the NWA in the morning of the day of the event).

Lockdown is the name of several fictional characters from the Transformers franchise. He is usually depicted as a ruthless bounty hunter nominally aligned with the Decepticons.

Lockdown is a television series appearing on the National Geographic Channel. The series is an educational look into prisons and jails in the United States, presented in a documentary format. Lockdown is known in some regions as America's Hardest Prisons. Reruns of the series currently air on The Justice Network.

Lockdown (2009) was a professional wrestling pay-per-view (PPV) event produced by the Total Nonstop Action Wrestling (TNA) promotion, which took place on April 19, 2009 at the Liacouras Center in Philadelphia, Pennsylvania. It was the fifth event under the Lockdown chronology. In the tradition of Lockdown events, every match took place inside a steel structure with six sides, known as Six Sides of Steel.

The main event was a Six Sides of Steel cage match for the TNA World Heavyweight Championship, in which Mick Foley defeated the reigning champion, Sting, to win the championship. Following another tradition of Lockdown events, TNA held the annual Lethal Lockdown match, which was contested inside a steel structure with a flat roof; in this match, Team Jarrett defeated Team Angle. Two featured bouts were scheduled on the undercard. In a Philadelphia Street Fight for the TNA World Tag Team and IWGP World Tag Team Championships, Team 3D ( Brother Ray and Brother Devon) defeated Beer Money, Inc. ( Robert Roode and James Storm) to retain the IWGP World Tag Team and to win the TNA World Tag Team Championship. The other bout was a Doomsday Chamber of Blood match, which saw Matt Morgan defeat Abyss.

Mick Foley chronicled the build to his match against Sting in the fourth volume of his memoirs, Countdown to Lockdown: A Hardcore Journal.

Lockdown (2012) was a professional wrestling pay-per-view (PPV) event produced by the Total Nonstop Action Wrestling (TNA) promotion, which took place on April 15, 2012 at the Nashville Municipal Auditorium in Nashville, Tennessee. It was the eighth under the Lockdown chronology and fourth event in the 2012 TNA PPV schedule. In the tradition of Lockdown events, every match took place inside a Steel Cage.

Lockdown (2008) was a professional wrestling pay-per-view (PPV) event produced by the Total Nonstop Action Wrestling (TNA) promotion, which took place on April 13, 2008 at the Tsongas Arena in Lowell, Massachusetts. It was the fourth under the Lockdown chronology and fourth event in the 2008 TNA PPV schedule. Eight professional wrestling matches, two of which for championships, were featured on the card. In the tradition of Lockdown events, every match took place inside a six sided steel structure known as the Six Sides of Steel.

The main event was for the TNA World Heavyweight Championship between then-champion Kurt Angle and Samoa Joe, with the added stipulation if Joe lost he would retire from professional wrestling. Joe won the encounter, thus winning the TNA World Heavyweight Championship for the first time. Also held on the card was the 2008 Lethal Lockdown match between Team Cage and Team Tomko. Team Cage of Christian Cage (captain), Matt Morgan, Kevin Nash, Rhino, and Sting defeated Tomko (captain), A.J. Styles, James Storm, and Team 3D ( Brother Devon and Brother Ray) of Team Tomko in the contest. Two featured bouts were scheduled on the undercard. The first was an Intergender Tag Team match pitting the team of Robert Roode and Payton Banks against the team of Booker T and Sharmell. Booker T and Sharmell were the victors in the match. The TNA X Division Championship was defended in the 2008 TNA Xscape match by Jay Lethal against Consequences Creed, Curry Man, Johnny Devine, Shark Boy, and Sonjay Dutt. Lethal won the competition to retain the championship.

Lockdown marked the fourth time the Lethal Lockdown and Xscape match formats were used by TNA. 55,000 was the reported figure of purchasers for the event by The Wrestling Observer Newsletter. Lockdown had an attendance of 5,500 people. Chris Sokol of the professional wrestling section of the Canadian Online Explorer rated the event a 6.5 out of 10, higher than the 2007 event's ranking of 5.5 out of 10 also by Sokol.

Lockdown (2010) was a professional wrestling pay-per-view (PPV) event produced by the Total Nonstop Action Wrestling (TNA) promotion, which took place on April 18, 2010 at the Family Arena in Saint Charles, Missouri. It was the sixth event under the Lockdown chronology and the fourth event of the 2010 TNA PPV schedule. In the tradition of Lockdown events, every match took place inside a steel cage. It was the first Lockdown event with a four-sided steel cage.

"Lockdown" is the seventeenth episode of the sixth season of the American medical drama House. It aired on April 12, 2010. This episode also marks the directorial debut of Hugh Laurie on the show.

This episode has five storylines: When the hospital is sent into lock-down mode due to a missing infant, all of the doctors must remain where they are, leaving Foreman and Taub in the file room, Wilson and Thirteen in the cafeteria playing truth or dare, House in a room with a patient ( David Strathairn), and Chase with his soon-to-be ex-wife, Cameron, as Cuddy tries to help police locate the infant. This episode is one of the show's rare instances when no medical mystery is presented, though House still deals with his "patient of the week".

Lockdown (2011) was a professional wrestling pay-per-view (PPV) event produced by the Total Nonstop Action Wrestling (TNA) promotion, that took place on April 17, 2011 at the U.S. Bank Arena in Cincinnati, Ohio. It was the seventh event under the Lockdown chronology and the fourth event of the 2011 TNA PPV schedule. In the tradition of Lockdown events, every match was booked to take place inside a steel cage.

The event featured double main event in which Sting defeated Rob Van Dam and Mr. Anderson in a steel cage match to retain the TNA World Heavyweight Championship, and Fortune ( James Storm, Robert Roode, Kazarian and Christopher Daniels) defeating Immortal ( Ric Flair, Abyss, Bully Ray and Matt Hardy) in a Lethal Lockdown match. In the other match at the top of the card Jeff Jarrett defeated Kurt Angle in a "Ultra Male Rules" Two out of Three Falls Steel Cage match.

Lockdown (2013) was a professional wrestling pay-per-view (PPV) event produced by the Total Nonstop Action Wrestling (TNA) promotion, which took place on March 10, 2013 at the Alamodome in San Antonio, Texas. It was the ninth under the Lockdown chronology and second event in the 2013 TNA PPV schedule. The event broke ground for TNA's largest domestic attendance record of over 7,200 fans, beating their previous record at Slammiversary 2012.

From 2005 to 2012, the tradition of Lockdown events featured every match taking place inside a Steel Cage. Beginning with this year's event, Lockdown was modified to featuring standard matches, and cage matches were reserved only for the high profile bouts. Lockdown was also moved to March for the first time since its inception in 2005.

Eight matches were featured on the card. The main event match had Bully Ray defeating defending champion Jeff Hardy in a Steel Cage match for the TNA World Heavyweight Championship. In the other high profile bouts Team TNA ( Sting, James Storm, Samoa Joe, Magnus, and Eric Young) defeated Aces & Eights ( Devon, D.O.C., Mr. Anderson, Knux, and Garett Bischoff) in a Lethal Lockdown match, and Wes Brisco upset Kurt Angle in a Steel Cage match.

Lockdown (2014) was a professional wrestling pay-per-view event produced by the Total Nonstop Action Wrestling (TNA) promotion, which took place on March 9, 2014 at the BankUnited Center in Miami, Florida. It was the tenth event under the Lockdown name and first event in the 2014 TNA PPV schedule.

From 2005 to 2012, the tradition of Lockdown events featured every match taking place inside a steel cage. However, in 2013, Lockdown was modified to featuring standard matches and cage matches were reserved only for the high profile bouts. This year Lockdown returned to being an all steel cage event.