Beer taken around a camp (6)
I believe the answer is:
laager
'camp' is the definition.
(I know that laager is a type of camp)
'beer taken around a' is the wordplay.
'beer' becomes 'lager' (type of beer).
'taken around' means one lot of letters goes inside another.
'lager' placed around 'a' is 'LAAGER'.
(Other definitions for laager that I've seen before include "Entrenched position" , "South African enclosure" , "Wagon camp in a ring" .)