1869, to denote the shape of the letter V. As a type of engine, by 1915.
updated on March 11, 2014
英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。