Definition of harrow:
		
		
		(n) :
		
		a device consisting of a heavy framework having several disks or teeth in a row, which is dragged across ploughed land to smooth or break up the soil, to remove weeds or cover seeds; a harrow 
plow
		 
			
	
		
								
				"the headless horseman harrowed Ichabod Crane as he tried to reach the bridge."