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
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swallowtail 3
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