penknife
n.
early 15c., from pen, n.1 + knife, n.. So called because such small knives were used to sharpen quills.
| 词汇 | penknife |
| 词根词缀 | Online Etymology Dictionary penknife n. early 15c., from pen, n.1 + knife, n.. So called because such small knives were used to sharpen quills. |
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