yard-arm
n.
also yardarm, 1550s, from yard, n.2 in the nautical sense (attested from Old English) + arm, n.1. In 19c. British naval custom, it was permissible to begin drinking when the sun was over the yard-arm.
| 词汇 | yard-arm | 
| 词根词缀 | Online Etymology Dictionary yard-arm n. also yardarm, 1550s, from yard, n.2 in the nautical sense (attested from Old English) + arm, n.1. In 19c. British naval custom, it was permissible to begin drinking when the sun was over the yard-arm. | 
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