exhauster

noun3

1. •
   One who exhausts or depletes.

   • One of the most insignificant-looking men I ever saw then became the destroyer of nations, the leveller of mountains, the exhauster of the ocean. — 1916
2. •
   Exhaust system.

   • The Westinghouse type CM.38 air compressor is mounted under the main frame and the Northey rotary type exhausters are fitted one on each side of the platform at No. 1 end; [...]. — 1962
3. •
   A vacuum exhauster.

   • Each engine also drives an exhauster to create the vacuum for operating the brake, which is applied by cylinders of standard pattern. — 1956