Decoy

n. lure, bait; trap, snare

v. lure, bait; ensnare, entrap

A decoy is usually a person, device or event meant as a distraction to conceal what an individual or a group might be looking for. Decoys have been used for centuries most notably in game hunting, but also in wartime and in the committing or resolving of crimes.The decoy in war may for example be a wooden fake tank, designed to be mistaken by bomber plane crews to be real, or a device that fools an automatic system such as a guided missile, by simulating some physical properties of a real target.For a defence system, decoys and chaff for ICBMs would mainly work in midcourse: during the boost phase they would be inside the rocket, because separate rockets for each of many decoys would not be practical, while at reentry light decoys and chaff considerably slow down and/or are destroyed in the atmosphere.
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Noun
1. a beguiler who leads someone into danger (usually as part of a plot)
(synonym) steerer
(hypernym) deceiver, cheat, cheater, trickster, beguiler, slicker
(hyponym) roper
2. something used to lure victims into danger
(synonym) bait, lure
(hypernym) device
(hyponym) fisherman's lure, fish lure
(part-holonym) trap
Verb
1. lure or entrap with or as if with a decoy
(hypernym) entice, lure, tempt
(derivation) bait, lure

(v. t.)
To lead into danger by artifice; to lure into a net or snare; to entrap; to insnare; to allure; to entice; as, to decoy troops into an ambush; to decoy ducks into a net.
  

(n.)
Anything intended to lead into a snare; a lure that deceives and misleads into danger, or into the power of an enemy; a bait.
  

(n.)
A place into which wild fowl, esp. ducks, are enticed in order to take or shoot them.
  

(n.)
A person employed by officers of justice, or parties exposed to injury, to induce a suspected person to commit an offense under circumstances that will lead to his detection.
  

(n.)
A fowl, or the likeness of one, used by sportsmen to entice other fowl into a net or within shot.
  

An imitation of a person, object or phenomenon, which is intended to deceive hostile surveillance or detection systems or mislead the adversary. Also called "dummy". 15/7/2000

Imitation, de quelque nature que ce soit, d'une personne, d'un objet ou d'un phénomène afin de tromper les systèmes de surveillance ou de détection adverses ou d'induire en erreur l'adversaire. 15/7/2000