1. To cause to start burning; subject to fire or great heat; SYN. light.
2. To start to burn; SYN. erupt, catch fire, take fire.

(Irregular preterit, past participle: lit).
To make lighter or brighter; SYN. illume, illumine, light up, illuminate.

To cause to operate by flipping a switch; SYN. turn on.

1. To become hostile towards; SYN. turn upon.
2. To produce suddenly or automatically, as of tears of charm.
3. When people or animals that you had good relations with turn on you, they stop being friendly and try to hurt you.