大妈

大媽
dàmā
  1. father's elder brother's wife
  2. aunt (affectionate term for an elderly woman)

CEDICT

Entry Composition

1 大 dà
  1. big; large; great
  2. older (than another person)
  3. eldest (as in 大姐 dàjiě)
  4. greatly; freely; fully
  5. (dialect) father
  6. (dialect) uncle (father's brother)
2 妈 mā
  1. ma
  2. mom
  3. mother