Beg·gar's lice Bot. The prickly fruit or seed of certain plants (as some species of Echinospermum and Cynoglossum) which cling to the clothing of those who brush by them.
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beggar's lice
n 1: Eurasian and North American plants having small prickly
nutlets that stick to clothing [syn: beggar lice]
2: any of various tropical and subtropical plants having
trifoliate leaves and rough sticky pod sections or loments
[syn: tick trefoil, beggar lice]