A small, knobbly littlecreature that goes around making a ruckus or causing some kind of chaos. You could use it to describe someone/thing that is mischievous.
1) don't ask that gimble to do it, it'll never ever get done, hell will have frozen over first.
2) he tell's more lies than pinnocchio, what a total gimble!
3) dude, you like such a gimble, fix your goddamn collar.