1 [kroop]
noun Pathology.
any condition of the larynx or trachea characterized by a hoarse cough and difficult breathing.

1755–65; noun use of croup to cry hoarsely (now dial.), blend of croak and whoop Unabridged


2 [kroop]
the highest part of the rump of a quadruped, especially a horse.

1250–1300; Middle English croupe < Middle French, Anglo-French crupe, Old French crope < Germanic; see crop Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
croup1 (kruːp)
a throat condition, occurring usually in children, characterized by a hoarse cough and laboured breathing, resulting from inflammation and partial obstruction of the larynx
[C16 croup to cry hoarsely, probably of imitative origin]

croup or croupe2 (kruːp)
the hindquarters of a quadruped, esp a horse
[C13: from Old French croupe; related to German Kruppe]
croupe or croupe2
[C13: from Old French croupe; related to German Kruppe]

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

"couching illness," 1765, from obsolete verb croup "to cry hoarsely, croak," probably echoic. This was the local name of the disease in southeastern Scotland, given wide currency by Dr. Francis Home (1719-1813) of Edinburgh in his 1765 article on it.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

croup (krōōp)

  1. See laryngotracheobronchitis.

  2. A pathological condition of the larynx, especially in infants and children, characterized by respiratory difficulty and a hoarse, brassy cough.

croup'ous (krōō'pəs) or croup'y 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
croup   (krp)  Pronunciation Key 
An acute infection that affects the upper and lower respiratory tracts, especially the larynx, trachea, and bronchi, and is caused most commonly by viruses of the genus Paramyxovirus. It is characterized by labored breathing and obstruction below the glottis, accompanied by a barking cough.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
When he was seven he suffered from croup and choking fits and even in his sleep had nightmares about suffocation.
Croup is an infection of the airway commonly caused by a virus.
Croup causes swelling around vocal cords and airways.
Croup is an immune response of the lower respiratory tract to infection with the same viruses that cause colds.
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