beggar’s-lice

noun, plural beg·gar’s-lice.

1. (used with a singular or plural verb) any of several plants, especially of the genera Cynoglossum and Hackelia, having small, prickly fruits that stick to clothing.
2. (used with a plural verb) the fruits or seeds of such a plant.

noun (functioning as singular)

1. any of several plants, esp the stickseed, having small prickly fruits that adhere to clothing, fur, etc
2. the seed or fruit of any of these plants