a harrow with sharp-edged slightly concave discs mounted on horizontal shafts and used to cut clods or debris on the surface of the soil or to cover seed after planting
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use disc harrow in a sentence
I cultivate with a disc harrow as long as possible, and grow nothing on the ground among the trees.
I believe in cultivation with the plow and disc harrow until the trees shade the ground so that weeds cannot grow much.
I cultivate my young orchard to corn and potatoes, using a disc harrow, and cease cropping when they begin to bear.
I generally use a common plow and disc harrow during the summer, where I have no crop in.
I plant my orchard to corn for about eight years, using a disc harrow; and cease cropping at the end of that time.