Dull piece of fabric we may wipe our feet on? (3)
I believe the answer is:
mat
This clue is a double definition.
'dull' is the first definition.
(mat as opposed to glossy)
'piece of fabric we may wipe our feet on?' is the second definition.
(Other definitions for mat that I've seen before include "Tangle" , "Paint with a dull surface" , "coaster" , "Rough piece of floor-covering" , "A piece of material as floor covering" .)