乳にゅう歯し

noun

baby tooth; milk tooth; deciduous tooth

Refers to a child's first set of teeth, which are later replaced by permanent teeth. Common in medical and everyday contexts.

• 子こ供どもの乳にゅう歯しが抜ぬけ始はじめた。

  My child's baby teeth have started to fall out.

• 乳にゅう歯しは全ぜん部ぶで20本ぽんあります。

  There are 20 baby teeth in total.