excav·en·ger [skávvənjər] (pluralexcav·en·gers) noun
1.animal feeding on carrion or scraps: an animal, bird, or other organism that feeds on dead and rotting flesh or discarded food scraps2.somebody looking for something usable: somebody who seeks or looks through discarded items in the hope of finding something usable3.chemistry substance removing impurities: something that is added to a chemical reaction or mixture to neutralize or remove impurities
It seems like "excavenger" is a misspelling or a typo. If you meant to ask about something related to excavating, construction, or scavenging, please provide more context so I can better assist you.