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O.E. lagu (pl. laga, comb. form lah-), from O.N. *lagu "law," collective pl. of lag "layer, measure, stroke," lit. "something laid down or fixed," from P.Gmc. *lagan "put, lay" (see lay (v.)). Replaced O.E. æ and gesetnes, which had the same sense development as law. Cf. also statute, from L. statuere; Ger. Gesetz "law," from O.H.G. gisatzida; Lith. istatymas, from istatyti "set up, establish." Law and order have been coupled since 1796.