1. A mechanism in a firearm that ejects the empty shell case after firing
   "The cartridge ejector smoothly removed the spent casing";
   - cartridge ejector
    
2. A type of pump that uses steam to compress and move fluids or gases
   "Depending on the specific application, an injector can take the form of an eductor-jet pump, a water eductor, a vacuum ejector, a steam-jet ejector, or an aspirator"; "The industrial plant utilized a steam ejector to efficiently transfer heat in their processing system";
   - thermocompressor, eductor-jet pump, injector, steam ejector, steam injector
    
3. A person who ousts or supplants someone else
   "The ejector forced the previous tenant to leave the property";
   - ouster

Derived forms: ejectors

Type of: actor, doer, mechanism, pump, worker

Part of: gun

Encyclopedia: Ejector