Roused about employment (3)
I believe the answer is:
use
'employment' is the definition.
(how something is used)
'roused about' is the wordplay.
'about' indicates a hidden word (the clue goes around or about the answer).
'USE' is hidden within 'roused'.
(Other definitions for use that I've seen before include "particular church liturgy" , "Employ or exploit" , "Function, purpose" , "Employment; utilise" , "Employ - advantage" .)