cocklebur

[ kok-uh l-bur ]
/ ˈkɒk əlˌbɜr /

noun

any composite plant of the genus Xanthium, comprising coarse weeds with spiny burs.
the burdock, Arctium lappa.

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Origin of cocklebur

First recorded in 1795–1805; cockle2 + bur1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for cocklebur

cocklebur
/ (ˈkɒkəlˌbɜː) /

noun

any coarse weed of the genus Xanthium, having spiny burs: family Asteraceae (composites)
the bur of any of these plants
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012