外婆

wàipó
  1. (coll.) mother's mother
  2. maternal grandmother

CEDICT

colloquial

Entry Composition

1 外 wài
  1. outside
  2. in addition
  3. foreign
  4. external
2 婆 pó
  1. (bound form) grandmother
  2. (bound form) matron
  3. (bound form) mother-in-law
  4. (slang) femme (in a lesbian relationship)