jumper cable

booster cable

Also called jumper cable, jumper.
Dictionary.com Unabridged

jumper

1 [juhm-per]
noun
1.
a person or thing that jumps.
2.
Basketball. jump shot.
3.
Sports. a participant in a jumping event, as in track or skiing.
4.
Manège. a horse specially trained to jump obstacles.
5.
a boring tool or device worked with a jumping motion.
6.
Also called jump wire. Electricity. a short length of conductor used to make a connection, usually temporary, between terminals of a circuit or to bypass a circuit.
7.
Also called jumper cable. booster cable.
8.
a kind of sled.
9.
Also called jumper stay. Nautical. a line preventing the end of a spar or boom from being lifted out of place.
10.
any of various fishes that leap from the water, as the striped mullet or jumprock.

Origin:
1605–15; jump + -er1

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
jumper1 (ˈdʒʌmpə)
 
n
1.  chiefly (Brit) a knitted or crocheted garment covering the upper part of the body
2.  (US), (Canadian) Also called: pinafore dress a sleeveless dress worn over a blouse or sweater
 
[C19: from obsolete jump man's loose jacket, variant of jupe, from Old French, from Arabic jubbah long cloth coat]

jumper2 (ˈdʒʌmpə)
 
n
1.  a boring tool that works by repeated impact, such as a steel bit in a hammer drill used in boring rock
2.  jumper cable, Also called: jumper lead a short length of wire used to make a connection, usually temporarily, between terminals or to bypass a component
3.  a type of sled with a high crosspiece
4.  a person or animal that jumps
5.  derogatory, slang (Irish) a person who changes religion; a convert

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

jumper
1853, apparently from 17c. jump "short coat," also "woman's under bodice," of uncertain origin, perhaps from Fr. jupe "skirt," which is ult. from Ar. jubbah "loose outer garment." Meaning "sleeveless dress worn over a blouse" first recorded Amer.Eng. 1939.
Online Etymology Dictionary, © 2010 Douglas Harper
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