milk tooth

US /ˈmɪlk tuːθ/
UK /ˈmɪlk tuːθ/
"milk tooth" picture
1.

乳牙

a temporary tooth in a child's first set of teeth

:
My daughter lost her first milk tooth today.
我女儿今天掉了第一颗乳牙
Children usually have 20 milk teeth.
儿童通常有20颗乳牙