Vera organised dance party (4)
I believe the answer is:
rave
'dance party' is the definition.
(rave is a type of dance event)
'vera organised' is the wordplay.
'organised' is an anagram indicator.
'vera' anagrammed gives 'RAVE'.
(Other definitions for rave that I've seen before include "Rapturous" , "Pop dance party" , "Laudatory sort of review - quite a rant" , "Talk wildly and irrationally" , "Rant - noisy, all-night party" .)