THE KANJI · N3 · 12 strokes
Tooth ; Cog
Readings on: シ
Kun readings: よわい・は・よわ.い・よわい.する
歯 — tooth
Readings depend on the word. In kun readings, the dot separates the kanji from its kana ending (okurigana).
Two-word kanji
Reading belongs to the complete word: it is not always deduced from isolated readings.