black swallowtail

black swal·low·tail

B b

Definitions of black swallowtail words

noun black swallowtail the tail of a swallow or a deeply forked tail like that of a swallow. 1
noun black swallowtail any of several butterflies of the genus Papilio, characterized by elongated hind wings that resemble the tail of a swallow, as P. polyxenes (black swallowtail) Compare spicebush swallowtail, tiger swallowtail, zebra swallowtail. 1
noun black swallowtail tail coat. 1

before 1535

One of the 29% oldest English words

First recorded in 1535-45; swallow2 + tail1

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 3% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

This diagram is provided by Google Ngram Viewer

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