Definitions for use up
consume, eat up, use up, eat, deplete, exhaust, run through, wipe out(verb)
use up (resources or materials)
"this car consumes a lot of gas"; "We exhausted our savings"; "They run through 20 bottles of wine a week"
take, occupy, use up(verb)
require (time or space)
"It took three hours to get to work this morning"; "This event occupied a very short time"
Kernerman English Learner's Dictionary
use up(verb)v. yuz or, for pt. form of 9, yust; n. yus
to finish a supply of sth
I used up all the soap.
to consume, deplete or exhaust
to take or occupy