Scarf on top of neck is hot (6)
I believe the answer is:
stolen
'hot' is the definition.
(thesaurus)
'scarf on top of neck' is the wordplay.
'scarf' becomes 'stole' (stole is a kind of scarf).
'on top of' suggests taking the first letters (I've seen 'on top' mean this).
The initial letter of 'neck' is 'n'.
'stole'+'n'='STOLEN'
'is' acts as a link.
(Other definitions for stolen that I've seen before include "Pinched" , "plagiarised?" , "subject to plagiarism" , "Taken unlawfully" , "Taken by thieves" .)