Collect silver for example, in jar (9)
I believe the answer is:
aggregate
'collect' is the definition.
(thesaurus)
'silver for example in jar' is the wordplay.
'silver' becomes 'ag' (Ag is the chemical symbol for silver).
'for example' becomes 'eg' ('e.g.' can be a synonym of 'for example').
'in' is an insertion indicator.
'jar' becomes 'grate' (make unpleasant sound).
'eg' going within 'grate' is 'gregate'.
'ag'+'gregate'='AGGREGATE'
(Other definitions for aggregate that I've seen before include "ingredients of concrete" , "Sum total" , "A whole formed by combining several elements" , "Material to make concrete, mortar, or plaster" , "Accumulation" .)