/ ˈlæpwɪŋ; NAmE / (also pee·wit ) noun
a black and white bird with a row of feathers (called a crest ) standing up on its head
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WORD ORIGIN
Old English hlēapewince , from hlēapan to leap and a base meaning move from side to side (whence also wink ); so named because of the way it flies. The spelling was changed in Middle English by association with lap and wing .