a harrow with a number of turning wheels rimmed with spikes, used for various soil treatments.
noun 1. a cultivating implement consisting of a row of wheels each with many fingerlike prongs, pulled over the ground to break up the soil and destroy weeds.
- Rotary joint
rotary joint ro·ta·ry joint (rō’tə-rē) or ro·ta·to·ry joint (rō’tə-tôr’ē) n. See trochoid joint.
- Rotary plough
noun 1. an implement with a series of blades mounted on a power-driven shaft, used to break up soil or weeds
noun 1. a tined auger mounted on a horizontal power-driven shaft, for pulverizing unplowed soil preparatory to planting.