A plant seed that jumps as a result of the movement of a moth larva which is developing inside it.
跳豆（一种内部有寄生飞蛾幼虫蠕动的植物种子）
Affected seeds are found in several plants of the family Euphorbiaceae, in particular the Mexican plant Sebastiana pavoniana, the seeds of which can contain larvae of the moth Cydia saltitans
Example sentencesExamples
They had obtained a pair of Mexican jumping beans.
The movement of a Mexican jumping bean will cause the tumbler to turn and toss about.
The movements of a jumping bean are actually caused by a caterpillar that lives inside the seed.
For more than half a century Mexican jumping beans have been sold in the United States.
Mexican jumping beans are grown in Mexico on a type of shrub.
Definition of jumping bean in US English:
jumping bean
nounˈjəmpiNG ˌbēnˈdʒəmpɪŋ ˌbin
A plant seed that jumps as a result of the movement of a moth larva which is developing inside it.
跳豆（一种内部有寄生飞蛾幼虫蠕动的植物种子）
Affected seeds are found in several plants of the family Euphorbiaceae, in particular the Mexican plant Sebastiana pavoniana, the seeds of which can contain larvae of the moth Cydia saltitans
Example sentencesExamples
Mexican jumping beans are grown in Mexico on a type of shrub.
They had obtained a pair of Mexican jumping beans.
The movements of a jumping bean are actually caused by a caterpillar that lives inside the seed.
The movement of a Mexican jumping bean will cause the tumbler to turn and toss about.
For more than half a century Mexican jumping beans have been sold in the United States.