A piece, as a ring or hook, attached to another piece by a pin, in such a manner as to permit rotation about the pin as an axis.

A small piece of ordnance, turning on a point or swivel; called also swivel gun.

Strength of mind or character that enables one to overcome adversity; confidence; force of will.

“Bob ain't got no swivel.”

To swing or turn, as on a pin or pivot.