'light up' definitions:

Definition of 'light up'

(from WordNet)
verb
Start to burn with a bright flame; "The coal in the BBQ grill finally lit up"
verb
Make lighter or brighter; "This lamp lightens the room a bit" [syn: light, illume, illumine, light up, illuminate]
verb
Become clear; "The sky cleared after the storm" [syn: clear up, clear, light up, brighten] [ant: cloud, overcast]
verb
Ignite; "The sky lit up quickly above the raging volcano"
verb
Begin to smoke; "After the meal, some of the diners lit up" [syn: light up, fire up, light]

Synonyms of 'light up'

From: Moby Thesaurus

Words containing 'light up'