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The Collaborative International Dictionary of English v.0.48 (gcide)

Jumper \Jump"er\, n. [See 1st {Jump}.]
1. 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.
[1913 Webster]

2. A sleeveless one-piece dress, either with full shoulders
or straps, sometimes with only the front part of the
bodice, usually worn by women with a blouse underneath.
[PJC]


jumper \jump"er\ (j[u^]mp"[~e]r), n.
1. One who, or that which, jumps.
[1913 Webster]

2. A long drilling tool used by masons and quarrymen.
[1913 Webster]

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.
[1913 Webster]

4. (Zool.) The larva of the cheese fly. See {Cheese fly},
under {Cheese}.
[1913 Webster]

5. (Eccl.) A name applied in the 18th century to certain
Calvinistic Methodists in Wales whose worship was
characterized by violent convulsions.
[1913 Webster]

6. (Horology) spring to impel the star wheel, also a pawl to
lock fast a wheel, in a repeating timepiece.
[1913 Webster]

{Baby jumper}. See in the Vocabulary.

{Bounty jumper}. See under {Bounty}.
[1913 Webster]


jumper \jump"er\, n.
1. A thing that jumps; esp., any of various tools or other
contrivances operating with a jumping motion; as, (Mining,
Quarrying, etc.), an instrument for boring holes in rocks
by percussion without hammering, consisting of a bar of
iron with a chisel-edged steel tip at one or both ends,
operated by striking it against the rock, turning it
slightly with each blow.
[Webster 1913 Suppl.]

2. (Electronics) a short wire, or a small plastic object
containing such a short wire, used to optionally connect
or disconnect two points in an electronic circuit, so as
to include or exclude portions of the circuit and thus
modify the function of the circuit. Such jumpers are much
used to adapt add-on circuit boards for different
conditions or functions within a computer.

Note: The contacts to which jumpers connect in commercially
produced circuit boards are typically two closely
spaced short stiff wires standing perpendicular to the
plane of the circuit board, and the jumper has two
holes with spacing identical to that of the contacts
wires, so as to allow convenient insertion or removal
of the jumper.
[PJC]


jumper \jump"er\, v. t. (electronics)
to insert a jumper[2] between the two contacts in (a
circuit). See 2nd {jumper}.
[PJC]