a duck, or an image of one, used to lure other ducks into a trap or within shooting range
Decoy ducks were floating in two feet of water.
Half a dozen wooden decoy ducks were moored in the current.
2.
a person or thing used to beguile or lead someone into danger; lure
Examples of 'decoy duck' in a sentence
decoy duck
He pointed down to the river where half a dozen wooden decoy ducks were moored in the current, crudely fashioned silhouettes like targets at a funfair.
James Fergusson KANDAHAR COCKNEY: A Tale of Two Worlds (2004)