'Scavenger' definitions:

Definition of 'scavenger'

From: WordNet
noun
A chemical agent that is added to a chemical mixture to counteract the effects of impurities
noun
Someone who collects things that have been discarded by others [syn: magpie, scavenger, pack rat]
noun
Any animal that feeds on refuse and other decaying organic matter

Definition of 'Scavenger'

From: GCIDE
  • Scavenger \Scav"en*ger\, n. [OE. scavager an officer with various duties, originally attending to scavage, fr. OE. & E. scavage. See Scavage, Show, v.] A person whose employment is to clean the streets of a city, by scraping or sweeping, and carrying off the filth. The name is also applied to any animal which devours refuse, carrion, or anything injurious to health. [1913 Webster]
  • Scavenger beetle (Zool.), any beetle which feeds on decaying substances, as the carrion beetle.
  • Scavenger crab (Zool.), any crab which feeds on dead animals, as the spider crab.
  • Scavenger's daughter [corrupt. of Skevington's daughter], an instrument of torture invented by Sir W. Skevington, which so compressed the body as to force the blood to flow from the nostrils, and sometimes from the hands and feet. --Am. Cyc. [1913 Webster]