Upholstery problem (3)
I believe the answer is:
rip
'upholstery problem' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rip that I've seen before include "Slash" , "Letters often seen on gravestones" , "Letters appended to writing on gravestone" , "Letters on a grave stone" , "Roue's" .)