scavenge (Verb) — Clean refuse from. ex. "Scavenge a street"
scavenge (Verb) — Collect discarded or refused material. ex. "She scavenged the garbage cans for food"
scavenge (Verb) — Feed on carrion or refuse. ex. "hyenas scavenge"
scavenge (Verb) — (chemistry) remove impurities from, esp. by a chemical reaction.
scavenge (Verb) — Expel the exhaust gases from the cylinder of an internal combustion engine on the return stroke.