The Collaborative International Dictionary
Petit \Pet"it\, a. [F. See Petty.] Small; little; insignificant; mean; -- Same as Petty.
By what small, petit hints does the mind catch hold of
and recover a vanishing notion.
--South.
Petit constable, an inferior civil officer, subordinate to the high constable.
Petit jury, a jury of twelve men, impaneled to try causes at the bar of a court; -- so called in distinction from the grand jury.
Petit larceny, the stealing of goods of, or under, a certain specified small value; -- opposed to grand larceny. The distinction is abolished in England.
Petit ma[^i]tre. [F., lit., little master.] A fop; a
coxcomb; a ladies' man.
--Goldsmith.
Petit serjeanty (Eng. Law), the tenure of lands of the crown, by the service of rendering annually some implement of war, as a bow, an arrow, a sword, a flag, etc.
Petit treason, formerly, in England, the crime of killing a person to whom the offender owed duty or subjection, as one's husband, master, mistress, etc. The crime is now not distinguished from murder.
Wiktionary
n. (context legal English) A regular trial jury, assembled to determine criminal or civil liability.
WordNet
n. a jury of 12 to determine the facts and decide the issue in civil or criminal proceedings [syn: petty jury]
Wikipedia
The petit jury (or 'scum jury, sometimes petty jury) hears the evidence in a trial as presented by both the plaintiff (petitioner) and the defendant (respondent). After hearing the evidence and often jury instructions from the judge, the group retires for deliberation, to consider a verdict. The majority required for a verdict varies. In some cases it must be unanimous, while in other jurisdictions it may be a majority or supermajority. A jury that is unable to come to a verdict is referred to as a hung jury. The size of the jury varies; in criminal cases involving serious felonies there are usually 12 jurors, although Scotland uses 15. A number of countries that are not in the English common law tradition have quasi-juries on which lay judges or jurors and professional judges deliberate together regarding criminal cases. However, the common law trial jury is the most common type of jury system.
In civil cases many trials require fewer than twelve jurors. Juries are almost never used in civil cases outside the United States and Canada. Other states with a common law tradition sometimes use them in defamation cases, in cases involving a governmental eminent domain power, and in cases involving alleged wrongful conviction. Civil law countries generally do not use civil juries. Civil juries are available in the United States and Canada in almost all cases where the only remedy sought is money damages.