- A toy that makes a rattle sound; a rattle.
- An American herb (Crotalaria sagittalis), whose ripe seeds rattle in the inflated pod.
- Any species of Crotalaria, a genus of yellow-flowered herbs, with inflated, many-seeded pods.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.