1 word for A
Filter answers for the "a" by length:
Boast – black bird
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C
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R
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O
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W
Hint 1 meaning
A bird, usually black, of the genus Corvus, having a
strong conical beak, with projecting bristles. It has a harsh, croaking
note. See Caw.
Hint 2 anagram
OWRC
Hint 3 another clue
Ridicule
5 +1