extractor (Noun) — A device for removing stale, humid or contaminated air from an enclosed space. ex. "extractors should be fitted with a humidistat controller to keep the room humidity at an acceptable level"
extractor (Noun) — An instrument for extracting tight-fitting components.
extractor (Noun) — An apparatus that uses centrifugal force to separate particles from a suspension.
extractor (Noun) — A mechanism in a firearm that pulls an empty shell case out of the chamber and passes it to the ejector.