Verb light up has 5 senses
- light up - start to burn with a bright flame; "The coal in the BBQ grill finally lit up"
--1 is one way to erupt, ignite, catch fire, take fire, combust, conflagrate
Sample sentence:
 Something ----s
- light, illume, illumine, light up, illuminate - make lighter or brighter; "This lamp lightens the room a bit"
--2 is one way to lighten, lighten up
Sample sentences:
 Somebody ----s something
 Something ----s something
 - clear up, clear, light up, brighten - become clear; "The sky cleared after the storm"
Sample sentences:
 Something ----s
 It is ----ing
 - light up - ignite; "The sky lit up quickly above the raging volcano"
--4 is one way to ignite, light
Sample sentence:
 Something ----s
- light up, fire up, light - begin to smoke; "After the meal, some of the diners lit up"
--5 is one way to ignite, light
Sample sentence:
 Somebody ----s
   
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