Angry male sheep (3,2)
I believe the answer is:
het up
'angry' is the definition.
(similar in meaning)
'male sheep' is the wordplay.
'male' becomes 'he' (he refers to a man).
'sheep' becomes 'tup' (tup is a kind of sheep).
'he'+'tup'='HET UP'
(Other definitions for het up that I've seen before include "in a rage?" , "in a state" , "Angry - agitated" , "Overwrought" , "On edge - agitated" .)