Rattlebox
Rattlebox (rat"t'l*boks`) , noun
1.
A toy that makes a rattling sound; a rattle.
2.
(a) (Botany) An American herb (Crotalaria sagittalis), the seeds of which, when ripe, rattle in the inflated pod.
(b)
(Botany) Any species of Crotalaria, a genus of yellow-flowered herbs, with inflated, many-seeded pods.