Sweep around everyone in dance venue (8)
I believe the answer is:
ballroom
'dance venue' is the definition.
(I've seen this before)
'sweep around everyone' is the wordplay.
'sweep' becomes 'broom' (synonyms).
'around' means one lot of letters goes inside another.
'everyone' becomes 'all' (all people).
'broom' going around 'all' is 'BALLROOM'.
'in' acts as a link.
(Other definitions for ballroom that I've seen before include "Dancing venue" , "place associated with steps?" , "potential murder scene on board" , "In which the tango or the foxtrot are danced" , "Dance venue" .)