歯は固がため

noun

teething toy; teether; teething ring

A toy given to infants to help soothe gums during teething.

• 赤あかちゃんに歯は固がためを渡わたしたら、すぐにかじり始はじめた。

  When I gave the baby a teething toy, they started chewing on it right away.

noun

tooth hardening meal; New Year's feast

A traditional meal eaten during New Year's celebrations, believed to promote strong teeth. Rarely used in modern contexts.

• 昔むかしは、正しょう月がつに歯は固がための膳ぜんを用よう意いする風ふう習しゅうがあった。

  In the past, there was a custom of preparing a tooth hardening meal during the New Year.