Abandoned, having pain in bed (7)
I believe the answer is:
beached
'abandoned' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'pain in bed' is the wordplay.
'pain' becomes 'ache' (ache is a kind of pain).
'in' means one lot of letters goes inside another.
'ache' inserted within 'bed' is 'BEACHED'.
'having' is the link.
Can you help me to learn more?
(Other definitions for beached that I've seen before include "landed ashore" , "unable to move?" , "High and dry" , "like a fish out of water" .)