Simple Definition of jumping bean
: a seed that moves when a small insect moves inside it
Full Definition of jumping bean
: a seed of any of several Mexican shrubs (genera Sebastiania and Sapium) of the spurge family that tumbles about because of the movements of the larva of a small tortricid moth (Cydia saltitans syn. Laspeyresia saltitans) inside it
First Known Use of jumping bean
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