swallowtail

swal·low·tail  (swl-tl)

n.

1.

a. The deeply forked tail of a swallow.

b. Something similar to the tail of a swallow.

2. See tailcoat.

3. Any of various colorful, widely distributed butterflies of the family Papilionidae, usually having an extension at the end of each hind wing that resembles the tails of certain swallows.

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swallowtail

Noun

1. a butterfly with a long tail-like part on each hind wing

2. the forked tail of a swallow or similar bird

Thesaurus

Noun

1.

swallowtail - a man's full-dress jacket with two long tapering tails at the back morning coat, swallow-tailed coat dress suit, full dress, tail coat, tailcoat, tails, white tie and tails, white tie - formalwear consisting of full evening dress for men jacket - a short coat morning dress - formal attire for men during the daytime