obtund (v.)youdaoicibaDictYouDict[obtund 词源字典]
c. 1400, (transitive) "to render dead, make dull," used occasionally in English, especially in medical jargon; from Latin obtundere "to blunt, make dull, weaken, exhaust," literally "to beat against" (see obtuse). Related: Obtundation; obtunded.[obtund etymology, obtund origin, 英语词源]