rotary harrow
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rotary harrow
n.
A harrow consisting either of a series of toothed wheels on one or more horizontal axles or a single large toothed wheel on a vertical axle.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.