Meaning

noun someone who leads a wandering unsettled life

noun a computer program that prowls the internet looking for publicly accessible resources that can be added to a database; the database can then be searched with a search engine

originFrom Middle English wanderere, wandrere, wanderare, equivalent to wander + -er. Cognate with Scots wanderer, wandirer (“wanderer”), Dutch wandelaar (“walker, hiker”), German Wanderer (“wanderer”), Danish vandrer (“wanderer”), Swedish vandrare (“wanderer”), Norwegian vandrer (“wanderer”).

Etymology from Wiktionary, CC BY-SA 3.0