decoy
noun
Pronunciation: /ˈdiːkɔɪ, dɪˈkɔɪ/
verb
Pronunciation: /dɪˈkɔɪ, ˈdiːkɔɪ/

Origin:
mid 16th century (earlier as coy): from Dutch de kooi 'the decoy', from Middle Dutch de kouw 'the cage', from Latin cavea 'cage'. decoy (sense 2 of the noun) is from the practice of using tamed ducks to lead wild ones along channels into captivity