jumping bean definition

  • noun:
    • A seed, at the time of particular Mexican plants associated with genera Sebastiana and Sapium, containing the larva regarding the moth Laspeyresia saltitans, whose movements cause the seed to jerk or move.
    • A Mexican bouncing bean.
    • identical to jumping-seed.
    • seed of Mexican shrubs of this genus Sebastiana containing the larva of a moth whoever motions cause the bean to jerk or tumble
  • adjective:
    • a seed of a Mexican Euphorbia, containing the larva of a moth (Carpocapsa saltitans). The larva by its sudden motions triggers the seed to roll to move and jump about.

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