Use up (resources or energy) (6)
I believe the answer is:
expend
(Other definitions for expend that I've seen before include "Pay out money" , "Spend or use up" , "Consume" , "Lavish" , "Use up (resources)" .)
I believe the answer is:
expend
(Other definitions for expend that I've seen before include "Pay out money" , "Spend or use up" , "Consume" , "Lavish" , "Use up (resources)" .)