■ noun 'di:kɔɪ
1》 a bird or mammal, or an imitation of one, used to lure game.
2》 a person or thing used to mislead or lure someone into a trap.
3》 a pond from which narrow netted channels lead, into which wild duck may be enticed for capture.
■ verb dɪ'kɔɪ , 'di:kɔɪ lure by means of a ~.
Origin
C16 (earlier as coy ): from Du. de kooi 'the ~', from MDu. de kouw 'the cage', from L. cavea 'cage'.