swallowtail
n.
also swallow-tail, 1540s as a type of arrowhead, from swallow, n.1 + tail, n.. Of a type of butterfly, by 1776; of a type of coat, 1835. As an adjective from 1590s. The bird's tail is long and deeply forked.
| 词汇 | swallowtail |
| 词根词缀 | Online Etymology Dictionary swallowtail n. also swallow-tail, 1540s as a type of arrowhead, from swallow, n.1 + tail, n.. Of a type of butterfly, by 1776; of a type of coat, 1835. As an adjective from 1590s. The bird's tail is long and deeply forked. |
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