Left sweethearts to shed clothes (4)
I believe the answer is:
over
'left' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for over that I've seen before include "Unit of test" , "Bout of six bowls in cricket" , "jumped fence" , "Excessive" , "Finished - across - in excess" .)