Gently scuffed mat fills home — this one's in mine (6)
I believe the answer is:
pitman
'one's in mine' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'gently scuffed mat fills home' is the wordplay.
I cannot really see how this works, but
'gently' could be 'p' (musical abbreviation for 'piano', softly) and 'p' is found within the answer.
an anagram of 'mat' is 'tma' which is located in the answer.
'home' could be 'in' ('he's home' can mean 'he's in') and 'in' is present in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'this' acts as a link.
Can you help me to learn more?
(Other definitions for pitman that I've seen before include "Mine worker" , "Racehorse trainer" , "Miner" , "Mine host perhaps" .)