light up (something)
idiom
1
: to provide light for (something) : to fill (something) with light
light a room up
Fireworks lit up the sky.
—often used figurativelyA smile lights up her whole face.
Her smile lights up the room.
2
: to cause (something) to burn
She lit up a cigarette.
Love words? Need even more definitions?
Merriam-Webster unabridged
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