light up
phrasal verblight up | light something up
- to become or to make something become bright with light or colour
- There was an explosion and the whole sky lit up.
- The night sky was lit up with fireworks.
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- if somebody’s eyes or face light up, or something lights them up, they show happiness or excitement
- His eyes lit up when she walked into the room.
- A smile lit up her face.
Extra Examples- Her face lit up with pleasure.
- Stacey's face immediately lit up.
- (informal) to begin to smoke a cigarette
- They all lit up as soon as he left the room.
- He sat back and lit up a cigarette.