—n. a heavy frame with iron teeth dragged over ploughed land to break up clods, remove weeds, cover seed, etc.
—v.tr.
1 draw a harrow over (land).
2 (usu. as harrowing adj.) distress greatly.
Derivatives:
harrower n. harrowingly adv.
Etymology: ME f. ON hervi
Useful english dictionary. 2012.