taut (adj.)youdaoicibaDictYouDict[taut 词源字典]
mid-13c., tohte "stretched or pulled tight," possibly from tog-, past participle stem of Old English teon "to pull, drag," from Proto-Germanic *tugn, from PIE *deuk- "to lead" (see duke (n.)), which would connect it to tow (v.) and tie. Related: Tautness.[taut etymology, taut origin, 英语词源]