Dugout
来自Big Physics
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wiktionary
From the verb phrase dug out.
etymonline
dugout (n.)
also dug-out, 1722, "primitive type of canoe," consisting of a log with the interior hollowed out, American English, from past participle of dig (v.) + out (adv.). Baseball sense is recorded by 1914, from earlier meaning "rough shelter excavated in the side of a bluff or bank" (1855).
