device any clever maneuver; "he would stoop to any device to win a point"; "it was a great sales gimmick"; "a cheap promotions gimmick for greedy businessmen"
gimbal an appliance that allows an object (such as a ship's compass) to remain horizontal even as its support tips
injector a contrivance for injecting (e.g., water into the boiler of a steam engine or particles into an accelerator etc.)
gismo -
something unspecified whose name is either forgotten or not known; "she eased the ball-shaped doodad back into its socket"; "there may be some great new gizmo around the corner that you will want to use"
