Able to accommodate a chopper (7)
I believe the answer is:
cleaver
'chopper' is the definition.
(a cleaver chops things)
'able to accommodate a' is the wordplay.
'able' becomes 'clever' (I've seen this before).
'to accommodate' means one lot of letters goes inside another.
'clever' going around 'a' is 'CLEAVER'.
(Other definitions for cleaver that I've seen before include "Butcher's knife" , "A butcher may use it" , "Long-bladed hatchet" , "A butcher's chopping tool" , "A clever sort of axe" .)