brandish (v.)youdaoicibaDictYouDict[brandish 词源字典]
mid-14c., from Old French brandiss-, present participle stem of brandir "to flourish (a sword)" (12c.), from brant "blade of a sword, prow of a ship," of Frankish origin (see brand (n.)). Related: Brandished; brandishing.[brandish etymology, brandish origin, 英语词源]