Bury coppers at crossing (11)
I believe the answer is:
interchange
'crossing' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'bury coppers' is the wordplay.
'bury' becomes 'inter' (to inter is to put into the ground).
'coppers' becomes 'change' (coppers can mean small change).
'inter'+'change'='INTERCHANGE'
'at' is the link.
Can you help me to learn more?
(Other definitions for interchange that I've seen before include "switch" , "station?" , "trade" , "road junction" , "where roads meet" .)