A jet jump for lifting water or withdrawing air from a space.
That part of the mechanism of a breech-loading firearm which ejects the empty shell.
A lever for removing circuit boards from an electronic chassis.
One who, or that which, ejects or dispossesses.
ejector seat: a pilot's seat in an airplane that can be forcibly ejected in the case of an emergency; then the pilot descends by parachute.
A device that uses a stream of high-pressure steam to induce flow in a lower pressure system