Word Origin & History
c.1320, "driver of a pack horse," from O.Fr. sommetier, from V.L. *sagmatarius "a pack horse driver," from L.L. sagmat- "a pack, burden," stem of sagma "packsaddle," from Gk. sagma, probably related to sattein "to pack, press, stuff." Used from c.1450 of horses and mules for carrying loads.