Small amount of money Everyman's hiding, getting stick (6)
I believe the answer is:
cement
'stick' is the definition.
(to cement something is to stick or attach it)
'small amount of money everyman's hiding' is the wordplay.
'small amount of money' becomes 'cent' (I've seen this before).
'everyman' becomes 'me' (where 'Everyman' is the setter of the crossword).
'hiding' means one lot of letters goes inside another.
'cent' enclosing 'me' is 'CEMENT'.
'getting' acts as a link.
(Other definitions for cement that I've seen before include "Join firmly together" , "It hardens when mixed with water" , "Stick together - substance used by a builder" , "binder" , "Firmly fix" .)