A ploeg (plural: ploegen) is a plow. Ploegen is also the verb “to plow.” Plowing was typically done in the spring. You may come across the noun in estate inventories of farmers.

Plowing, spring 1922. Credits: Leinde Nood, collection Erfgoedcentrum Zutphen, photo 0523_0002_A27 (public domain)