colloquial "good-bye" word, 1904, said in early uses to be "cockney," of unknown origin; variant tooraloo is recorded from c. 1921.
updated on October 10, 2017
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。