any of the weedy plants belonging to the genus Lappula, having prickly seeds that adhere to clothing.
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British Dictionary definitions for stickseed
any of various Eurasian and North American plants of the boraginaceous genus Lappula, having red-and-blue flowers and small prickly fruits: Also called: beggar's-lice
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