late Old English hwearf "shore, bank where ships can tie up," earlier "dam, embankment," from Proto-Germanic *khwarfaz (cf. Middle Low German werf "mole, dam, wharf," German Werft "shipyard, dockyard"); related to Old English hwearfian "to turn," perhaps in a sense implying "busy activity," from PIE root *kwerp- "to turn, revolve" (cf. Old Norse hverfa "to turn round," German werben "to enlist, solicit, court, woo," Gothic hvairban "to wander," Greek kartos "wrist," Sanskrit surpam "winnowing fan"). Wharf rat "person who hangs around docks" is recorded from 1836.