Feather
/fˈɛðər/
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Definition
(noun) A branching, hair-like structure that grows on the bodies of birds, used for flight, swimming, protection and display.
Sentence Examples
Making such a large sale is a feather in the salesman's cap.
Winning the Grand Prix was a feather in the cap of the famous drivers.
CEFR Practice Quiz
The bird's colorful ____ glowed brightly in the morning sun as it preened itself on the branch.