Wounded, look embarrassed (5)
I believe the answer is:
gored
'wounded' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives occasionally mean the same thing.
'look embarrassed' is the wordplay.
'look' becomes 'go' (I can't explain this - if you can you should believe this answer much more).
'embarrassed' becomes 'red' (someone may blush or go red when embarrassed).
'go'+'red'='GORED'
Can you help me to learn more?
(Other definitions for gored that I've seen before include "transfixed" , "Wounded by bull's horns" , "Pierced with horn or tusk" , "Pierced - blush (can be 5 or 2,3)" , "Pierced by bull's horns" .)