📖 Definitions of "Light up"
verb
- 1
To illuminate, to bring light to something, to brighten.
- 2
To show an increase in activity or a brightening of mood.
"He saw Mary and his face lit up."
- 3
To light a cigarette, pipe etc.
"Smoking in this building is not allowed, so I always step outside to light up."
- 4
To make happy.
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