歯し

noun

tooth

The reading し is used in compounds and formal contexts; the standalone word for 'tooth' is usually は.

See also: 歯 (は)

• 歯し科か医いは歯しの治ち療りょうをする。

  A dentist treats teeth.

• この歯はブラシは歯はに優やさしい。

  This toothbrush is gentle on teeth.

noun

age; years

Used in formal expressions for age, often in set phrases like 歯に合う (to be age-appropriate) or 歯を重ねる (to grow older).

• 彼かれは歯はに合あわない若わかい服ふく装そうをしている。

  He wears clothes that are too young for his age.

• 歯はを重かさねるごとに知ち恵えがつく。

  As one grows older, one gains wisdom.