Gathered together as dames dancing around (7)
I believe the answer is:
amassed
'gathered together' is the definition.
(I've seen this before)
'as dames dancing around' is the wordplay.
'dancing' indicates an anagram.
'around' indicates putting letters inside.
'dames' anagrammed gives 'amsed'.
'as' put inside 'amsed' is 'AMASSED'.
(Other definitions for amassed that I've seen before include "Accumulated a great quantity" , "Gathered in great quantity" , "Accumulated over time" , "Heaped up, accumulated" , "Accumulated, gathered" .)