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Jump"ing, p. a. & vb. n. of Jump, to leap.Jumping bean, a seed of a Mexican Euphorbia, containing the larva of a moth (Carpocapsa saltitans). The larva by its sudden movements causes the seed to roll to roll and jump about. -- Jumping deer (Zo'94l.), a South African rodent (Pedetes Caffer), allied to the jerboa. -- Jumping jack, a toy figure of a man, jointed and made to jump or dance by means of strings. -- Jumping louse (Zo'94l.), any of the numerous species of plant lice belonging to the family Psyllid'91, several of which are injurious to fruit trees. -- Jumping mouse (Zo'94l.), North American mouse (Zapus Hudsonius), having a long tail and large hind legs. It is noted for its jumping powers. Called also kangaroo mouse. -- Jumping mullet (Zo'94l.), gray mullet. -- Jumping shrew (Zo'94l.), any African insectivore of the genus Macroscelides. They are allied to the shrews, but have large hind legs adapted for jumping. -- Jumping spider (Zo'94l.), spider of the genus Salticus and other related genera; one of the Saltigrad'91; -- so called because it leaps upon its prey.

The noun has 2 senses

1. jump, jumping -- the act of jumping; propelling yourself off the ground; "he advanced in a series of jumps"; "the jumping was unexpected"
2. jumping -- the act of participating in an athletic competition in which you must jump
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