The kanji 当 primarily conveys the idea of "to hit," "to be appropriate," "to be assigned," or "to be in charge." It implies a sense of directness, focus, or suitability. This core meaning branches out into various related concepts depending on the context.

・On-yomi (音読み): ・トウ (tō) ・Kun-yomi (訓読み): ・あ（たる） (a(taru)) ・あ（てる） (a(teru))

⚫︎当選（とうせん） Translation: Election / Winning (e.g., in a lottery) ⚫︎当番（とうばん） Translation: Person in charge / Duty roster ⚫︎当たる（あたる） Translation: To hit / to win / to be equivalent to

The kanji 当 is a phono-semantic compound (形声文字, keisei moji). The left side is the radical, which means "field" or "land". The right side is 音 (on), which acts as a phonetic component, implying the sound of the kanji. Initially, the character was related to a harvest from a field (the field can be thought of as a target and the harvest or fruit as the “hit”). Over time, the meaning broadened to encompass “to hit” in general and related concepts of suitability.