"piece of metal (later plastic) attached to a cast object," 1875, earlier (1849) "channel through which metal is poured into a mold;" of unknown origin.
updated on November 14, 2013
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。