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.
- One that scavenges, as a person who searches through refuse for food.
- An animal, such as a bird or insect, that feeds on dead or decaying matter.
- Chemistry A substance added to a mixture to remove or inactivate impurities.