姨婆

yípó
  1. (strictly speaking) sister of one's maternal grandmother; (more broadly) grandaunt; sister of one's mother's mother or mother's father
  2. (Tw) (old) husband's maternal aunt

CEDICT

taiwan old

Entry Composition

1 姨 yí
  1. mother's sister
  2. aunt
2 婆 pó
  1. (bound form) grandmother
  2. (bound form) matron
  3. (bound form) mother-in-law
  4. (slang) femme (in a lesbian relationship)