Roughly admit us into sports venue (7)
I believe the answer is:
stadium
'sports venue' is the definition.
(I've seen this before)
'roughly admit us' is the wordplay.
'roughly' indicates anagramming the letters.
'admit'+'us'='admitus'
'admitus' with letters rearranged gives 'STADIUM'.
'into' is the link.
(Other definitions for stadium that I've seen before include "Venue for sporting events, concerts etc" , "bowl?" , "Open-air sports venue" , "eg Yankee, Wembley" , "A major sports ground" .)