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One of the minute, hooked projections extending from and interlocking the barbules of a feather.
(Zoology) ornithol any of the minute hooks on the barbules of feathers that interlock with those of adjacent barbules
[C19: from New Latin barbicella, literally: a small beard, from Latin barba beard]
any of the hooklets that fringe the barbules of a feather and hold them together.
[1865–70; < New Latin barbicella= Latin barbi- (comb. form of barba beard) + -cella diminutive suffix]