Swivel (drill rig)
WordNet
noun
(1) A coupling (as in a chain) that has one end that turns on a headed pin
verb
(2) Turn on a pivot
WiktionaryText
Etymology
swyvel, swivel, from a derivative of swīfan "to revolve", + -el, an instrumental suffix
Noun
- (mechanical): 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; will
- Bob ain't got no swivel.
Verb
- To swing or turn, as on a pin or pivot.