| 单词 | drill-pin |
| 释义 | > as lemmasdrill-pin drill-pin n. ΚΠ 1850 J. Chubb On Constr. Locks & Keys 15 The drill pins of the locks, and the pipes of the keys. 1874 E. H. Knight Pract. Dict. Mech. Drill-pin, a pin in a lock which enters the hollow stem of a key. < as lemmas |
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