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scavenge
verb (used with object), scavenged, scavenging.
1. to take or gather (something usable) from discarded material.
2. to cleanse of filth, as a street.
3. to expel burnt gases from (the cylinder of an internal-combustion engine).
4. Metallurgy. to purify (molten metal) by introducing a substance that will combine chemically with impurities.
verb (used without object), scavenged, scavenging.
5. to act as a scavenger.
6. (of an engine or cylinder) to become scavenged of burnt gases.
7. to search, especially for food.
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