Chapter Juggler to Juncture of J by Webster's Dictionary (1913 Edition)

5. (Arch.) An abrupt interruption of level in a piece of brickwork or masonry.

From the jump, from the start or beginning. [Colloq.] — Jump joint. (a) A butt joint. (b) A flush joint, as of plank in carvel-built vessels. — Jump seat. (a) A movable carriage seat. (b) A carriage constructed with a seat which may be shifted so as to make room for second or extra seat. Also used adjectively; as, a jump-seat wagon.

Jump
(Jump), a. Nice; exact; matched; fitting; precise. [Obs.] "Jump names." B. Jonson.

Jump
(Jump), adv. Exactly; pat.[Obs.] Shak.

Jumper
(Jump"er) n.

1. One who, or that which, jumps.

2. A long drilling tool used by masons and quarrymen.

3. A rude kind of sleigh; — usually, a simple box on runners which are in one piece with the poles that form the thills. [U.S.] J. F. Cooper.

4. (Zoöl.) The larva of the cheese fly. See Cheese fly, under Cheese.

5. (Eccl.) A name applied in the 18th century to certain Calvinistic Methodists in Wales whose worship was characterized by violent convulsions.

6. (Horology) spring to impel the star wheel, also a pawl to lock fast a wheel, in a repeating timepiece.

Baby jumper. See in the Vocabulary. — Bounty jumper. See under Bounty.

Jumper
(Jump"er), n. [See 1st Jump.] A loose upper garment; as: (a) A sort of blouse worn by workmen over their ordinary dress to protect it. (b) A fur garment worn in Arctic journeys.

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 (Zoöl.), 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 (Zoöl.), any of the numerous species of plant lice belonging to the family Psyllidæ, several of which are injurious to fruit trees. — Jumping mouse (Zoöl.), 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 (Zoöl.), gray mullet. — Jumping shrew (Zoöl.), any African insectivore of the genus Macroscelides. They are allied to the shrews, but have large hind legs adapted for jumping. — Jumping spider (Zoöl.), spider of the genus Salticus and other related genera; one of the Saltigradæ; — so called because it leaps upon its prey.

Jumpweld
(Jump"weld`) v. t. See Buttweld, v. t.

Juncaceous
(Jun*ca"ceous) a. [See Juncate.] (Bot.) Of. pertaining to, or resembling, a natural order of plants of which the common rush (Juncus) is the type.

Juncate
(Jun"cate) n. See Junket.[Obs.] Spenser.

Juncite
(Jun"cite) n. [L. juncus a rush.] (Paleon.) A fossil rush.