外公

wàigōng
  1. (coll.) mother's father
  2. maternal grandfather

CEDICT

colloquial

Entry Composition

1 外 wài
  1. outside
  2. in addition
  3. foreign
  4. external
2 公 gōng
  1. public
  2. collectively owned
  3. common
  4. international (e.g. high seas, metric system, calendar)
  5. make public
  6. fair
  7. just
  8. Duke, highest of five orders of nobility 五等爵位 wǔděngjuéwèi
  9. honorable (gentlemen)
  10. father-in-law
  11. male (animal)