Purplish brown (4)
I believe the answer is:
puce
'purplish brown' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for puce that I've seen before include "Purplish colour" , "Pinkish purple" , "Brownish-purple colour" , "Deep red to brownish purple" , "Purplish-brown colour" .)