Sexual intercourse involving more than two persons, especially with a high proportion of men.
Gang rape.
The act of a street gang attacking random people on the streets and/or committing gang crimes.
To participate in a gangbang.
We all got to gangbang the porn star.
To beat one or a smaller amount of people as a gang.
To belong to a gang; to commit criminal acts as part of a gang.
It broke my heart to see him out there gangbanging.