1A transitive verb meaning to turn on, switch on, or light up — a light, a fire, a heater, the TV, etc. Usually written in kana as つける; the 点ける spelling highlights the nuance of igniting or lighting. Corresponds to sense 13 of the general 付ける.
暗いので部屋の電気をつけてください。
It's dark, so please turn on the room light.
寒くなってきたので暖房をつけよう。
It's getting cold, so let's switch on the heater.
マッチでろうそくに火を点けた。
I lit the candle with a match.
寒い夜は早めにストーブを点ける。
On cold nights I light the stove early.
寝る前にテレビをつけっぱなしにしないでください。
Please don't leave the TV on before going to bed.