Pain that remains after losing heart? (4)
I believe the answer is:
ache
'pain' is the definition.
(ache is a kind of pain)
'remains after losing heart?' is the wordplay.
I cannot quite understand how this works, but
'heart?' could be 'h' (card game abbreviation) and 'h' is found in the answer.
The remaining letters 'ace' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'that' is the link.
Can you help me to learn more?
(Other definitions for ache that I've seen before include "Long ? pain" , "Take an aspirin for it" , "A dull lingering pain" , "Nagging pain" , "Play up" .)