Source : Webster's Revised Unabridged Dictionary (1913)

Plowman \Plow"man\, Ploughman \Plough"man\, n.; pl. {-men}.
   1. One who plows, or who holds and guides a plow; hence, a
      husbandman. --Chaucer. Macaulay.

   2. A rustic; a countryman; a field laborer.

   {Plowman's spikenard} (Bot.), a European composite weed
      ({Conyza squarrosa}), having fragrant roots. --Dr. Prior.

Source : WordNet®

ploughman
     n : a man who plows [syn: {plowman}, {plower}]
     [also: {ploughmen} (pl)]