Used up (5)
'used up' is the definition.
('spend' can be a synonym of 'use up')
This is the entire clue.
(Other definitions for spent that I've seen before include "Completely exhausted" , "Worn Out, exhausted" , "Splashed out" , "Drained of energy - or paid out" , "Exhausted, having paid money?" .)
'used up' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ate that I've seen before include "Munched" , "Consumed food" , "Took food" , "Ingested" , "mischief-maker" .)