gang bang 
informal
noun
1The successive rape of one person by a group of people.
1.1A sexual orgy involving changes of partner.
2North American An instance of violence involving members of a criminal gang.
verb (gang-bang)
1 [with object] (Of a group of people) rape (someone).
2 (as noun gang-banging) North American The violent activities of a criminal gang.
Derivatives
gang-banger
- Mann–Whitney
- Mano
- manoa
- manoalide
- mano a mano
- manoao
- Manobo
- manoeuvrability
- manoeuvrable
- manoeuvre
- manoeuvrer
- man of action
- man of blood and iron
- man of God
- man of honour
- man of law
- man of letters
- man of mold
- man of mould
- man of straw
- man of the cloth
- man of the house
- man of the match
- man of the moment
- man of the world