Webster
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Webster’s Revised Unabridged Dictionary · 1913

Swallowtail

Swal′low·tail′ (·tāl′), n. 1. (Carp.) A kind of tenon or tongue used in making joints. See Dovetail.

2. (Bot.) A species of willow.

3. (Fort.) An outwork with converging sides, its head or front forming a reëntrant angle; — so called from its form. Called also priestcap.

4. A swallow-tailed coat.

This Stultz coat, a blue swallowtail, with yellow buttons. Thackeray.

5. An arrow. Sir W. Scott.

6. (Zoöl.) Any one of numerous species of large and handsome butterflies, belonging to Papilio and allied genera, in which the posterior border of each hind wing is prolongated in the form of a long lobe.

☞ The black swallowtail, or asterias (see Papilio), the blue swallowtail, or philenor, the tiger swallowtail, or turnus (see Turnus), and the zebra swallowtail, or ajax (see under Zebra) are common American species. See also Troilus.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.