carpetweed
car·pet·weed
noun
1.
annual prostrate mat-forming weed having whorled leaves and small greenish-white flowers; widespread throughout North America
Origin
From carpet + weed.
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Parts
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.