"unnamed thing," 1898, chiefly U.S., a made-up word (compare doohickey).
also doohicky, a name for something one doesn't know the name of, 1914, American English, arbitrary formation.
updated on September 30, 2018
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。