Horns possibly removed (5)
I believe the answer is:
shorn
'removed' is the definition.
Both the answer and definition are adjectives. Perhaps there's an association between them I don't understand?
'horns possibly' is the wordplay.
'possibly' is an anagram indicator.
'horns' is an anagram of 'SHORN'.
Can you help me to learn more?
(Other definitions for shorn that I've seen before include "'The Lord tempers the wind to the ..... lamb'" , "(Of sheep) with wool cut" , "Having had fleece removed" , "Subjected to a shearing" , "set upon by strippers?" .)