When multiple partners, usually 3 or more, engage in sexual intercourse with a single willing partner. (If partner is unwilling it is called gang rape).

When I get fucked by 6 or more guys at once.

1) To commit crimes in a gang.

2) To to have sex in groups.

when a slut gets more then 4 cocks at a time, by sukcing and fucking them until she is covered in jizz.

A group or men (typically 4 or more) having sex with a single female (or male in gay situations). Gangbangs are usually the most enjoyable form of pornography.

Deffinition 1: When several men have sex with one woman

Deffinition 2: When a gang of people jump someone or bang on some1
Gang+Bang on= GangBang

1. 5 or more people fucking each other.
Can be concentual or rape.
2. When a place or spot gets overly crowded and complicated, either by gang members, cops or anyone.