Silver bar (5)
I believe the answer is:
ingot
'silver bar' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ingot that I've seen before include "Gold Stick" , "Block of precious metal" , "Mass of metal, especially gold or silver" , "E.g. a gold bar" , "Bar of bullion, for example" .)