Definition of "light up" in English

Verb

To illuminate, to bring light to something, to brighten.
To start to emit light; to become activated as a light source.
To show an increase in activity or a brightening of mood.
- He saw Mary and his face lit up.
To ignite.
To light a cigarette, pipe, etc.
- Smoking in this building is not allowed, so I always step outside to light up.
To light a cigarette, pipe, etc. for (someone).
To make happy.
To introduce (someone to something), to make someone aware of or interested in something; turn on.
To open fire on a target or group of targets, especially with rockets, a flamethrower, etc.
- telling me to light it up if it didn't stop approaching
To shock (someone) with a stun gun.
To activate the emergency sirens on a police vehicle in order to pull someone over.
- I guess he doesn't realize who's behind him, because the way he's darting and weaving, he's practically begging me to light him up.

Verb