from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A device that brings about and helps maintain equilibrium.
Sorry, no etymologies found.
"There is nothing wrong, and you must surrender to the psychic equilibrator so that I can proceed with the examination."
"The chassis needs truing up, the equilibrator has sagged out of plumb, and the ailerons have got to be readjusted, but it's only a matter of a few days at the outside before she'll be in shape.