母上

mǔshàng
(slang) mother; mom (from Japanese 母上 "haha-ue")

CEDICT

slang

Entry Composition

1 母 mǔ
  1. mother
  2. elderly female relative
  3. origin
  4. source
  5. (of animals) female
2 上 shàng
  1. (bound form) up; upper; above; previous
  2. first (of multiple parts)
  3. to climb; to get onto; to go up
  4. to attend (class or university)
  5. (directional complement) up
  6. (noun suffix) on; above