C （外）祖母　 father's or mother's mother

1. grandmother的基本意思是“（外）祖母”，指父亲或母亲的母亲。
2.与grandmother对应的阳性名词是grandfather.

　miss ～　想念祖母
　great ～　曾祖母
　old ～　老祖母

　Her grandmother is still alive.　她的祖母仍然健在。
　The old woman is her grandmother.　那个老太太是她祖母。
　My grandmother died hard, suffering through a long illness.　我的祖母是久病而死的，死得很痛苦。
　Everyone has grandmother.　每个人都有祖母。
　She looks like her grandmother very much.　她长得很像她的外祖母。
　I miss my grandmother very much.　我很想念外祖母。

［词源］　词根grand+mother（母亲）