thaught (n.)youdaoicibaDictYouDict[thaught 词源字典]
"rower's bench," 1620s, alteration of thoft, from Old English þofte, from Proto-Germanic *thufto- (cognates: Dutch doft, German ducht), from PIE *tupta-, from root *tup- "to squat."[thaught etymology, thaught origin, 英语词源]