A thing or person which bangs, in any sense.
: A firework that makes a bang.
A woman's breast.
A sausage.
An old, worn-out car.
A cylinder in a car.
He drives a little four-banger to work.
A powerfully energetic piece of music, especially dance music.
(by extension) Any particularly good or pleasing thing.
Someone who indulges in group sex -- see gangbang.
A member of a violent gang.
A violent person.