Webster’s Revised Unabridged Dictionary · 1913
Ejector
E·ject′or (ē·jĕk′tẽr), n. 1. One who, or that which, ejects or dispossesses.
2. (Mech.) A jet jump for lifting water or withdrawing air from a space.
Ejector condenser (Steam Engine), a condenser in which the vacuum is maintained by a jet pump.