| 单词 | linchpin |
| 释义 | linchpin n. 1. a pin passed through an axle-end to keep a wheel in position. 2. a person or thing vital to an enterprise, organization, etc. Etymology: ME linch f. OE lynis + PIN |
| 随便看 |
英语词典包含43808条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。