Cut down fine length of cloth (4)
I believe the answer is:
fell
'cut down' is the definition.
(I know that cut down can be written as fell)
'fine length of cloth' is the wordplay.
'fine' becomes 'f' (abbreviation e.g. condition of old coins, books).
'length of cloth' becomes 'ell' (historical fabric measurement).
'f'+'ell'='FELL'
(Other definitions for fell that I've seen before include "Stuck-up" , "Cause to tumble down < hill" , "Flatten" , "Highland moor" , "Chop down" .)