Wear a hole in the carpet (4)
I believe the answer is:
pace
'wear a hole in the carpet' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pace that I've seen before include "Part of step" , "Speed of walking" , "Speed of a single step?" , "With the leave of; speed" , "Gait" .)