1 word for O
Filter answers for the "o" by length:
Hippy musical
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H
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A
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I
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R
Hint 1 meaning
A slender outgrowth from the chitinous cuticle of insects,
spiders, crustaceans, and other invertebrates. Such hairs are totally
unlike those of vertebrates in structure, composition, and mode of
growth.
Hint 2 anagram
HIRA
Hint 3 another clue
Coat
18 +1