Gimble

GIMBLE, v. to grin or smile. Though the g in this word is hard […] ]

[1878, Samuel Henry Miller, Sydney Barber Josiah Skertchly, The Fenland, Past and Present, iv Gimble—to grin or smile, (N.)]

[…] I'd pull up at the garden-gate to take a bunch of flowers to stick in my buttonhole, and get a smile from ye that seemed to gimble itself through and through my buzzum !

[T]wo fine powdered footmen, all yellow, and green, and gold lace, comed running to open the door [...] one of them, giving a knowing wink to the other, all the same as if they took me for a burglar comed under fictious pretences to make observations. [...] Well, they gimbled at that again. Howsomever, the sight of the money kinder brought one of them to reason, so he took me into Mr. Maplestone's room at last; […]

"Now then, what are yow gimbling¹ at, young mester?" he said.

[…]sometimes they ‘giffle’ (fidget) or ‘gimble’ (grin) […]

The axle which revolves carries a small bevel wheel with 46 teeth, a similar wheel in all respects, only having 2 more teeth gears into this; but owing to its being hung on a gimble joint, like a ship's compass, it does not revolve, but makes a succession of rapid serpentine vibrations, around the face of the other wheel.

He thus introduced a laterally- mounted one-star plate which could be tilted on a gimble ring.