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[nos-truh l] /ˈnɒs trəl/
either of the two external openings of the nose.
Origin of nostril
before 1000; Middle English nostrill, Old English nosterl, variant of nosthyrl, equivalent to nos(u) nose + thyrel hole; see thirl Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for nostril
  • Do the same at the tip and nostril of your nose and behold, no sound and no sense.
  • Digital also offers predictive control: you can know exactly how his head will shatter, down to each jettisoned nostril.
  • Without my permission, she pierced her nose and now has a small stud in her nostril.
  • As you walk in, one approaches with an eyebrow raised and nose aloft to give you the benefit of full-frontal froggy nostril.
  • Try to catch the discharge outside the nostril on a tissue or swab.
  • By the fourth, there was blood trickling from his left nostril.
  • Mucus from the other nostril should be collected the same way.
British Dictionary definitions for nostril


either of the two external openings of the nose related adjectives narial narine
Word Origin
Old English nosthyrl, from nosunose + thyrel hole
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for nostril

Old English nosþyrl, nosðirl, literally "the hole of the nose," from nosu "nose" (see nose (n.)) + þyrel "hole" (see thrill (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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nostril in Medicine

nostril nos·tril (nŏs'trəl)
A naris.

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