Merriam-Webster Collegiate Dictionary - gimbal

 I. noun  Etymology: alteration of obsolete gemel double ring, from Middle English, from Anglo-French gemel, jomel, from Latin gemellus, diminutive of geminus  Date: circa 1780 a device that permits a body to incline freely in any direction or suspends it so that it will remain level when its support is tipped — usually used in plural; called also ~ ring  II. transitive verb  (-balled or -baled; -balling or -baling)  Date: 1875 to provide with or support on ~s