RATTLEBOX
crotalaria, rattlebox
(noun) any of various plants of the genus Crotalaria having inflated pods within which the seeds rattle; used for pasture and green-manure crops
Source: WordNet® 3.1
Etymology
Noun
rattlebox (plural rattleboxes)
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.
Source: Wiktionary
Rat"tle*box`, n.
1. A toy that makes a rattle sound; a rattle.
2. (Bot.)
(a) An American herb (Crotalaria sagittalis), the seeds of which,
when ripe, rattle in the inflated pod.
(b) Any species of Crotalaria, a genus of yellow-flowered herbs, with
inflated, many-seeded pods.
Source: Webster’s Unabridged Dictionary 1913 Edition