Jumping \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["o]l.), 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["o]l.), any of the numerous species of plant lice belonging to the family Psyllid[ae], several of which are injurious to fruit trees.

Jumping mouse (Zo["o]l.), 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["o]l.), gray mullet.

Jumping shrew (Zo["o]l.), any African insectivore of the genus Macroscelides. They are allied to the shrews, but have large hind legs adapted for jumping.

Jumping spider (Zo["o]l.), spider of the genus Salticus and other related genera; one of the Saltigrad[ae]; -- so called because it leaps upon its prey.

Source: Webster's Revised Unabridged Dictionary (1913)