What is "sentry"

Kite \Kite\ (k[imac]t), n. [OE. kyte, AS. c[=y]ta; cf. W. cud, cut.]

1. (Zo["o]l.) Any raptorial bird of the subfamily Milvin[ae], of which many species are known. They have long wings, adapted for soaring, and usually a forked tail.

   Note: The European species are Milvus ictinus and Milvus migrans; the pariah kite of India is Milvus govinda; the sacred or Brahmany kite of India is Haliastur Indus; the American fork-tailed kite is the Nauclerus furcatus.

2. Fig.: One who is rapacious.

   Detested kite, thou liest.
   --Shak.

3. A light frame of wood or other material covered with paper or cloth, for flying in the air at the end of a string.

4. (Naut.) A lofty sail, carried only when the wind is light.

5. (Geom.) A quadrilateral, one of whose diagonals is an axis of symmetry.
   --Henrici.

6. Fictitious commercial paper used for raising money or to sustain credit, as a check which represents no deposit in bank, or a bill of exchange not sanctioned by sale of goods; an accommodation check or bill. [Cant]

7. (Zo["o]l.) The brill. [Prov. Eng.]

8. (Naut.) A form of drag to be towed under water at any depth up to about forty fathoms, which on striking bottom is upset and rises to the surface; -- called also sentry.

   Flying kites. (Naut.) See under Flying.

   Kite falcon (Zo["o]l.), an African falcon of the genus Avicida, having some resemblance to a kite.

1610s, originally "watchtower;" perhaps a shortened variant of sentinel, which had a variant form centrinel (1590s); or perhaps worn down from sanctuary, on notion of "shelter for a watchman." Meaning "military guard posted around a camp" is first attested 1630s. Sentry-box is from 1728.

n. 1 A guard, particularly on duty at the entrance to a military base. 2 (context uncountable English) Sentry duty; time spent being a sentry. 3 (cx nautical English) A form of drag to be towed underwater, which on striking bottom is upset and rises to the surface.

n. a person employed to watch for something to happen [syn: lookout, lookout man, sentinel, watch, spotter, scout, picket]

Sentry is the codename of several unrelated fictional characters appearing in comic books published by Marvel Comics.

Sentry (real name Curtis Elkins) is a member of The Jury in the fictional Marvel comic universe. His rank is commanding officer. His ethnicity is African-American.

The Sentry (Robert "Bob" Reynolds) is a fictional superhero appearing in American comic books published by Marvel Comics. The character first appears in The Sentry #1 (Sep. 2000) and was created by Paul Jenkins and Jae Lee, with uncredited conceptual contributions by Rick Veitch.

Sentry-459 is a fictional character appearing in American comic books published by Marvel Comics. It is one of series of giant humanoid robots built by the alien race the Kree. The character first appeared in Fantastic Four vol. 1, #64 (Jul 1967) and was created by Stan Lee and Jack Kirby.

The Sentry is an autonomous underwater vehicle (AUV) made by the Woods Hole Oceanographic Institution. Sentry is designed to descend to depths of and to carry a range of devices for taking samples, pictures and readings from the deep sea.

Sentry is the successor to ABE (Autonomous Benthic Explorer) and is designed for research at the mid-water and near-seabed depths. The AUV was first trialled in deep-sea operations off Bermuda in April 2006.

Sentry is feet in height, wide (including thrusters) and long.

Sentry may refer to:

• Sentry, a guard at a gate or other point of passage − see also General Orders for Sentries
• Sentry (AUV), Autonomous underwater vehicle used to measure deep-ocean data
• Sentry (monitoring system), an automatic near-Earth asteroid collision monitoring system
• Sentry (comics), the codename of unrelated fictional characters of the Marvel Universe
  • Sentry (Robert Reynolds), the most notable of these characters
• Sentry Foods, a chain of grocery stores in Wisconsin, United States
• E-3 Sentry AWACS, airborne early warning aircraft
• Sentry Insurance, a Wisconsin based insurance company
• Sentry Island, Nunavut, Canada
• Sentry gun, a gun that automatically aims and fires at targets
• SentrySafe, a safe manufacturing company headquartered in Rochester, New York
• The Sentinel (video game), released in the US as The Sentry
• Soviet frigate Storozhevoy, (name translates to The Sentry in English)
• The Sentry (painting), a 1654 painting by Carel Fabritius

Sentry is a highly automated collision monitoring system that continually scans the most current asteroid catalog for possibilities of future impact with Earth over the next 100+ years. Whenever a potential impact is detected it will be analyzed and the results immediately published on the Near Earth Object Program. Two or three weeks of optical data is not enough to conclusively identify an impact years in the future. By contrast, eliminating an entry on the risk page is a negative prediction; a prediction of where it will not be. From the point of view of the general public, it is not worth getting worried about an object with a couple of weeks of optical data showing a possible Earth encounter years from now.