Leave standing with a warm jacket (5)
I believe the answer is:
parka
'jacket' is the definition.
(I know that parka is a jacket)
'leave standing with a warm' is the wordplay.
I cannot quite understand how this works, but
'leave' could be 'park' (parking a car is leaving it somewhere) and 'park' is found within the answer.
'a' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for parka that I've seen before include "Anorak" , "Kind of heavy jacket" , "Warm, hooded coat" , "Short, hooded coat" , "warm gear" .)