1. A dense growth of shrubs or underbrush; a copse.
2. Something suggestive of a dense growth of plants, as in impenetrability or thickness: "the thicket of unreality which stands between us and the facts of life" (Daniel J. Boorstin).

[Old English thiccet, from thicce, thick. See thick.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.