to be lit (e.g. candle, lamp, light bulb); to be lighted; to be burning
部屋に明かりが灯った。
A light was lit in the room.
街灯が一つずつ灯っていく。
The street lights are coming on one by one.
遠くの窓に灯る明かりが温かそうに見えた。
The light glowing in a distant window looked warm.