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rowel

英 ['raʊ(ə)l] 美 ['raʊəl]

vt. 将排脓条插入；用小齿轮刺马
n. （马刺上的）小齿轮；插环打脓
n. (Rowel)人名；(法)罗韦尔

英文词源

rowel (n.): "pointed wheel on a spur," mid-14c., from Old French roelle, roel (Modern French rouelle), "small wheel" (see roulette).