Look embarrassed when wounded (5)
I believe the answer is:
gored
'wounded' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives can occasionally define each other.
'look embarrassed' is the wordplay.
'look' becomes 'go' (I can't justify this - if you can you should give a lot more credence to this answer).
'embarrassed' becomes 'red' (someone may blush or go red when embarrassed).
'go'+'red'='GORED'
'when' acts as a link.
Can you help me to learn more?
(Other definitions for gored that I've seen before include "like an unfortunate matador?" , "Pierced - blush (can be 5 or 2,3)" , "Stabbed with a horn/tusk" , "Wounded by a bull" , "Injured by a horn or tusk" .)