Ejector /(?)/

E·ject·or

Ejector

n.
  1. One who, or that which, ejects or dispossesses.
  2. A jet jump for lifting water or withdrawing air from a space. (Mech.)
  3. That part of the mechanism of a breech-loading firearm which ejects the empty shell.

Phrases & Compounds
Ejector condenser
a condenser in which the vacuum is maintained by a jet pump.