noun / verb
harrow
HAIR-oh/hˈæroʊ/
To break up ground with a toothed farming implement.
The tractor pulls the toothed implement to harrow the soil.

Etymology
A harrow breaks and tears the soil. The verb transferred that physical action to the feelings, making deep distress something like being torn or raked over.
More examples
- A tractor pulls the harrow across the freshly plowed field.
- We harrowed the ground before planting barley.
- After plowing, harrowing helps smooth the soil for planting.
Forms
harrow · harrows · harrowed · harrowing