Dozens rue very chaotic meeting (10)
I believe the answer is:
rendezvous
'meeting' is the definition.
(rendezvous is a kind of meeting)
'dozens rue very chaotic' is the wordplay.
'very' becomes 'v' (abbreviation).
'chaotic' indicates anagramming the letters.
'dozens'+'rue'+'v'='dozensruev'
'dozensruev' is an anagram of 'RENDEZVOUS'.
(Other definitions for rendezvous that I've seen before include "Meet - meeting" , "Date" , "Meeting-place" , "Arranged meeting" , "Meeting place" .)