light up (something)idiom
Definition of light up (something)
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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