scavage

From Middle English scavage, schevage, schewage, from Anglo-Norman escavage, escauwage, alteration of earlier escauvinghe (“scavage”), from Middle English shewing, schewing (“inspection, examination, show”), from Old English sċēawung (“a looking at, seeing, contemplation, consideration, respect, regard, reconnoitering, surveying, inspection, examination, scrutiny, a spectacle, show, appearance, pretence, a showing, exhibiting, manifestation, toll on exposure of goods”), equivalent to show +‎ -ing.

scavage (countable and uncountable, plural scavages)

1. (historical) A toll or duty anciently exacted from merchant strangers by mayors, sheriffs, etc. for goods offered for sale within their precincts.

Back-formation from scavager.

scavage (third-person singular simple present scavages, present participle scavaging, simple past and past participle scavaged)

1. To act as a scavenger, to scavenge.