The Collaborative International Dictionary of English v.0.48:
Plowboy \Plow"boy`\, Ploughboy \Plough"boy`\, n. A boy that drives or guides a team in plowing; a young rustic. [1913 Webster] PlowerWordNet (r) 3.0 (2006):
ploughboy n 1: a boy who leads the animals that draw a plow [syn: plowboy, ploughboy]