Use, as energy (5)
'use as energy' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for expend that I've seen before include "Use up or disburse" , "Consume" , "Lay out, disburse" , "Spend or use up" , "Pay out money" .)
'use as energy' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for exert that I've seen before include "Bring into use, strength or influence" , "Strive" , "Bring quality or influence into play" , "Exercise, wield" , "Bring into play, wield" .)