Origin: 1545–55; earlier also hord, horda ≪ Czech,Polishhorda < Ukrainian dialectgordá,Ukrainianordá,Old Russian (orig. in Zolotaya orda the Golden Horde), via Mongolian or directly < Turkicordu, orda royal residence or camp (later, any military encampment, army); cf. Urdu
1555, from W. Turkic (cf. Tatar urda "horde," Turkish ordu "camp, army"), to Eng. via Polish, Fr., or Sp. The initial -h- seems to have been attached in Polish.