disk

noun, in full ‘disk harrow’ | ‘disk harrow’: a harrow equipped with a series of sharp metal disks set on edge or on an angle on one or more axles; ‘harrow’: a farm implement consisting of a heavy frame with sharp teeth or upright disks, used to break up and even off plowed ground (AH)

“A lot of the shoreline got sold off by the farmers just so that they could buy new equipment like tractors or a disk or something like.”

“We had a small club, and in the spring or the fall we had guys come with their teams and plow or disk or something like that, you know. Tom and I plowed over forty acres with six horses.”