a boy who leads or guides a team drawing a plow.
a country boy.

Origin of plowboy

First recorded in 1560–70; plow + boy Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for plow-boy

Historical Examples of plow-boy

Word Origin and History for plow-boy

also plowboy, 1560s, from plow + boy.

Online Etymology Dictionary, © 2010 Douglas Harper