washboard
n.
also wash-board, clothes-cleaning device, 1882, from wash, v. + board, n.1. As a percussion instrument, attested from 1925; in reference to abdominal muscles, recorded from 1950 in boxing jargon.
| 词汇 | washboard | 
| 词根词缀 | Online Etymology Dictionary washboard n. also wash-board, clothes-cleaning device, 1882, from wash, v. + board, n.1. As a percussion instrument, attested from 1925; in reference to abdominal muscles, recorded from 1950 in boxing jargon. | 
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