Repairs pieces and shards at last (5)
I believe the answer is:
mends
'repairs' is the definition.
('mend' can be a synonym of 'repair')
'pieces and shards at last' is the wordplay.
'pieces' becomes 'men' ('man' can be a synonym of 'piece').
'at last' indicates one should take the final letters.
The final letters of 'and shards' are 'ds'.
'men'+'ds'='MENDS'
(Other definitions for mends that I've seen before include "Fixes" , "Repairs, darns" .)