light up

verb
RareNot in standard dictionaries
1

To illuminate, to bring light to something, to brighten.

2

To start to emit light; to become activated as a light source.

3

To show an increase in activity or a brightening of mood.

4

To ignite.

5

To light a cigarette, pipe, etc.

6

To light a cigarette, pipe, etc. for (someone).

7

To make happy.

8

To introduce (someone to something), to make someone aware of or interested in something; turn on.

9

To open fire on a target or group of targets, especially with rockets, a flamethrower, etc.

10

To shock (someone) with a stun gun.

#slang