Dictionary
2 ENTRIES FOUND:

jumping bean

noun

: 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

circa 1889

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