Origin: before 900; Middle English laven, partly < Old French laver < Latin lavāre to wash; partly representing Old English lafian to pour water on, wash, itself perhaps < Latin lavāre
O.E. gelafian "wash by pouring, pour (water)," possibly an early Eng. or W.Gmc. borrowing of L. lavare "to wash," or its O.Fr. descendant, laver. L. lavare is from PIE *lou- "to wash" (cf. L. luere "to wash," Gk. louein "to wash, bathe," O.Ir. loathar "basin," Bret. laouer "trough," O.E. leaþor