The kanji 灯 primarily represents "light" or a "lamp." It signifies something that emits illumination, typically from a source like a flame, electricity, or other methods of producing light. The character carries connotations of brightness, guidance, and illumination.

・On-yomi (音読み): トウ (tou) ・Kun-yomi (訓読み): ひ (hi) (light, flame) or ともしび (ともしび) (light, lamp)

⚫︎灯台 (toudai) Translation: lighthouse ⚫︎電灯 (dentou) Translation: electric light ⚫︎灯りをつける (akari o tsukeru) Translation: to turn on the light