1590s, from Anglo-French escrowe, from Old French escroe "scrap, small piece, rag, tatter, single parchment," from a Germanic source akin to Old High German scrot "a scrap, shred, a piece cut off" (see shred (n.)). Originally a deed delivered to a third person until a future condition is satisfied, which led to sense of "deposit held in trust or security" (1888).
