Not all words have well-defined antonyms.
Volley, volley-ball
Volley-ball
The plural of volley is volleys.
volley of gunshots
The noun "volley" is used as a collective noun for a volley of shots; a term used for gunfire or for tennis.
volley ball in quebec
Sempre Volley was created in 1970.
The answer is a volley
Umbria Volley was created in 2001.
Volley Bergamo was created in 1991.
The noun "volley" is a standard collective noun for a volley of shots; a term used for gunfire or for tennis.
Some choices for a collective noun might be 'a gang of hooligans', 'a crowd of hooligans', 'a band of hooligans', etc.