Remain behind selling ermine coats (6)
I believe the answer is:
linger
'remain behind' is the definition.
(I've seen this before)
'selling ermine coats' is the wordplay.
'coats' indicates the answer is hidden within the clue (I've seen 'coat' mean this (I've seen this in other clues)).
'LINGER' is hidden within 'selling ermine'.
(Other definitions for linger that I've seen before include "Be slow to go" , "Remain behind" , "Stay behind" , "Procrastinate" , "Hang back awhile" .)