Hurt companion visiting AE (4)
I believe the answer is:
ache
'hurt' is the definition.
(synonyms)
'companion visiting ae' is the wordplay.
'companion' becomes 'ch' (Companion of Honour).
'visiting' means one lot of letters goes inside another.
'ch' placed within 'ae' is 'ACHE'.
(Other definitions for ache that I've seen before include "Similar" , "Cause pain" , "Dull prolonged pain" , "Feel sore" , "Pine" .)