单词	swallowtail
释义	swallowtail \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\ noun Etymology: swallow (I) + tail; partly translation of French queue d'aronde; partly translation of German schwalbenschwanz 1. : a forked and tapering tail (as of a swallow) 2. : something resembling the tail of a swallow: as  a. : broadhead 2  b. : dovetail  c. : an outwork with converging sides, whose front forms a reentrant angle  d. : a pennant tapering to a double point  e. also swallowtail coat : tailcoat 3. also swallowtail butterfly : any of various large butterflies of Papilio and related genera that have the border of the hind wing produced into a taillike process and are brightly colored with black and yellow commonly predominating — see black swallowtail, tiger swallowtail, zebra swallowtail [swallowtail 3]
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