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backbone

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back⋅bone

  [bak-bohn]
Use backbone in a Sentence
–noun
1. Anatomy. the spinal column; spine.
2. strength of character; resolution.
3. something resembling a backbone in appearance, position, or function.
4. Bookbinding. a back or bound edge of a book; spine.
5. Nautical. a rope running along the middle of an awning, as a reinforcement and as an object to which a supporting bridle or crowfoot may be attached.
6. Naval Architecture. the central fore-and-aft assembly of the keel and keelson, giving longitudinal strength to the bottom of a vessel.
Origin:
1250–1300; ME bacbon. See back 1 , bone1

Related forms:
backboned, adjective
backboneless, adjective

Synonyms:
2. firmness, decision, fortitude.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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back·bone   (bāk'bōn')   
n.  

  1. The vertebrate spine or spinal column.

  2. Something, such as the keel of a ship, that resembles a backbone.

  3. A main support or major sustaining factor: the backbone of a thesis.

  4. Geology

    1. A ridge forming the principal axis of a mountain.

    2. The principal mountain ridge, range, or system of a region.

  5. Chemistry The main chain of atoms in a polymer.

  6. Strength of character; determination: displayed grit and backbone in facing adversity.

back'boned' adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

backbone

The primary line(s) that connects the slower, shorter cable portions of a communications network together. (See last mile.) In larger networks, such as the Internet, a backbone consists of high-capacity, high-speed lines that can extend over great distances.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Slang Dictionary
backbone

  1. n.
    courage; integrity. (Colloquial.) : If you had any backbone, you would be able to deal with this.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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Word Origin & History

backbone 
"spine," c.1300, from back + bone. Fig. sense of "strength of character" is attested from 1843.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: back·bone
Pronunciation: -'bOn, -"bOn
Function: noun
1 : SPINALCOLUMN, SPINE
2 : the longest chain of atoms or groups of atoms in a usually long molecule (as apolymer or protein)
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

backbone back·bone (bāk'bōn')
n.
See spinal column.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Computing Dictionary

backbone networking
The top level in a hierarchical network. Stub networks and transit networks which connect to the same backbone are guaranteed to be interconnected.
See also: Internet backbone.
(1998-07-02)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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