大姨妈 dàyímā eldest maternal aunt Definitions Defs Origin Strokes Stroke Words Sentences Sents dàyímā eldest maternal aunt 大 dà adjective eldest the oldest; first in order of seniority among siblings or relatives姨妈 姨媽 yímā noun maternal aunt (informal) mother's married sisterdàyímā period 大 dà adjective big big; large; great; vast; high in scale or intensity; (of a person) old; adult姨妈 姨媽 yímā period (slang) menstruation or menstrual period (often as 大姨妈 dàyímā)dàyímā auntie 大 dà adjective big big; large; great; vast; high in scale or intensity; (of a person) old; adult姨妈 姨媽 yímā noun maternal aunt (informal) mother's married sister