n. 1. the seed of bur marigolds. Syn. -- spanish needles. [ WordNet 1.5 ]
2. any of several plants of the genus Bidens having yellow flowers and pricky fruits that cling to fur and clothing; -- also called beggar's-ticks. Syn. -- bur marigold, burr marigold, beggar's-ticks, sticktight. [ WordNet 1.5 ]