noun
Refers to the light of a lamp, candle, or similar flame-based source. Often used in literary or slightly formal contexts.
遠くに小さな灯火が見えた。
I saw a small light in the distance.
彼は灯火を消して眠りについた。
He put out the lamp and went to sleep.
Compound of 灯 (tō, 'lamp, light') and 火 (ka, 'fire'). The reading is on'yomi.