noun Anatomy, Zoology.
a bone of the pectoral arch.
(in humans) either of two slender bones, each articulating with the sternum and a scapula and forming the anterior part of a shoulder; collarbone.

1605–15; < Medieval Latin clāvicula collarbone, Latin: tendril, door-bolt, little key, equivalent to clāvi(s) key + -cula -cule1

clavicular [kluh-vik-yuh-ler] , adjective
claviculate [kluh-vik-yuh-leyt] , adjective
subclavicular, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
clavicle (ˈklævɪkəl)
1.  Nontechnical name: collarbone either of the two bones connecting the shoulder blades with the upper part of the breastbone
2.  the corresponding structure in other vertebrates
[C17: from Medieval Latin clāvicula, from Latin clāvis key]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1615, from M.Fr. clavicule "collarbone," from M.L. clavicula, from L., lit. "small key, bolt," dim. of clavis "key" (see slot (2)); a loan-translation of Gk. kleis "key, collarbone." So called supposedly from its function as the "fastener" of the shoulder.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

clavicle clav·i·cle (klāv'ĭ-kəl)
Either of two slender bones that extend from the manubrium of the sternum to the acromion of the scapula. Also called collarbone.

cla·vic'u·lar (klə-vĭk'yə-lər) adj.
cla·vic'u·late' (-lāt') adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
clavicle   (klāv'ĭ-kəl)  Pronunciation Key 
Either of two slender bones that extend from the upper part of the sternum (breastbone) to the shoulder. Also called collarbone.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for clavicles
This discovery also indicates that the furcula of birds is derived from clavicles.
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