extractor

from The Century Dictionary.

• noun A kitchen press for extracting the juices of meats in making meat extracts, beef-tea, etc.
• noun A machine with rollers through which skins are wrung to remove the surplus water after they have been soaked.
• noun One who or that which extracts.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who, or that which, extracts.
• noun (Surg.) A forceps or instrument for extracting substances.
• noun (Breech-loading Firearms) A device for withdrawing a cartridge or spent cartridge shell from the chamber of the barrel.
• noun A centrifugal drying machine.
• noun (Apiculture) A machine for clearing combs of honey; also, a device for rendering wax.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of various mechanical devices that extract a component from others
• noun chemistry An apparatus that uses a solvent to remove soluble substances from a mixture
• noun A part of the bolt that removes a cartridge from the chamber
• noun graph theory a particular kind of bipartite graph

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a mechanism in a firearm that pulls an empty shell case out of the chamber and passes it to the ejector
• noun an apparatus that uses centrifugal force to separate particles from a suspension
• noun an instrument for extracting tight-fitting components