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v. de·thatched, de·thatch·ing, de·thatch·es
To remove (dead grass) from a lawn, usually to aerate the soil.
To remove dead grass from a lawn.
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.
to remove dead grass from (a lawn)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014