Source : Webster's Revised Unabridged Dictionary (1913)

Plowboy \Plow"boy`\, Ploughboy \Plough"boy`\, n.
   A boy that drives or guides a team in plowing; a young
   rustic.

Source : WordNet®

ploughboy
     n : a boy who leads the animals that draw a plow [syn: {plowboy}]