swivel
1. swiv.el \'swiv-*l\ n [ME; akin to OE swi-fan to revolve, ON sveigja to sway - more]at SWAY : a device joining two parts so that one or both can pivot freely (as on a bolt or pin) 2. swivel \-(*-)lin\ vb or swiv.eled or swiv.elled; or swiv.el.ing; or swiv.el.ing : to turn on or as if on a swivel