Fit silver on table at last (5)
I believe the answer is:
agree
'fit' is the definition.
(I know that fit can be written as agree)
'silver on table at last' is the wordplay.
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'on' becomes 're' ('on' can be mean 'with reference to').
'at last' indicates one should take the final letters.
The final letter of 'table' is 'e'.
'ag'+'re'+'e'='AGREE'
(Other definitions for agree that I've seen before include "'Assent, concur (5)'" , "Concur - correspond" , "Be of one mind" , "Enjoy view in common" , "Give consent" .)