Harrow

(Heb. harits), a tribulum or sharp threshing sledge; a frame
armed on the under side with rollers or sharp spikes (2 Sam.
12:31; 1 Chr. 20:3).

Heb. verb "sadad", to harrow a field, break its clods (Job
39:10; Isa. 28:4; Hos. 10: 11). Its form is unknown. It may have
resembled the instrument still in use in Egypt.