Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
to remove the accumulated thatch from (a lawn); thatch
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
verb de·thatched, de·thatch·ing, de·thatch·es verb, transitive
To remove (dead grass) from a lawn, usually to aerate the soil.verb, intransitive
To remove dead grass from a lawn.
- de·thatchˈer noun