Fix small end of tear in garment (6)
I believe the answer is:
scrape
'fix' is the definition.
(I've seen this before)
'small end of tear in garment' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'end of' indicates one should take the final letters.
'in' indicates putting letters inside.
'garment' becomes 'cape' (cape is a kind of garment).
The last letter of 'tear' is 'r'.
'r' put within 'cape' is 'crape'.
's'+'crape'='SCRAPE'
(Other definitions for scrape that I've seen before include "Abrade in capers" , "Thinly-spread butter" , "Save as much as possible" , "Grate - predicament" , "Abrade - economise" .)