二胎

èrtāi
second pregnancy

CEDICT

second child (i.e. second pregnancy)

Wiktionary

Entry Composition

1 二 èr
  1. two
  2. 2
  3. (Beijing dialect) stupid
2 胎 tāi
  1. fetus
  2. classifier for litters (of puppies etc)
  3. padding (in clothing or bedding)
  4. womb carrying a fetus
  5. (fig.) origin
  6. source
  7. (loanword) tire