spanish needles spa·nish·need·les uncommon noun 1. the seed of bur marigolds Synonymsspanish needlesbeggar-ticks 2. common bur marigold of the eastern United States Synonymsspanish needlesBidens bipinnata Related words Broader terms bur marigoldbur Parts bur marigold WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.