Leave a heartless woman something to wear (4)
I believe the answer is:
gown
'to wear' is the definition.
(gown is a kind of wear)
'leave a heartless woman' is the wordplay.
'leave' becomes 'go' (to go is to depart or leave).
'a heartless' suggests removing the centre.
'woman' with its centre removed is 'wn'.
'go'+'wn'='GOWN'
'something' is the link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for gown that I've seen before include "Shift" , "Ball dress" , "Formal frock, hospital garb and ceremonial dress" , "A woman's long dress, or an informal dressing garment" , "Academic robe" .)