grandame (n.)youdaoicibaDictYouDict[grandame 词源字典]
also grandam, c. 1200, "a grandmother; an old woman," from grand- + dame. Compare Anglo-French graund dame. Contracted form grannam attested from 1590s. Grand dame "great lady, lady of rank and dignity" (1744) is a modern borrowing from French.[grandame etymology, grandame origin, 英语词源]