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nostril

American  
[nos-truhl] / ˈnɒs trəl /

noun

nostrils plural
  1. either of the two external openings of the nose.


nostril British  
/ ˈnɒstrɪl /

noun

  1. either of the two external openings of the nose

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of nostril

before 1000; Middle English nostrill, Old English nosterl, variant of nosthyrl, equivalent to nos ( u ) nose + thyrel hole; see thirl

Explanation

A nostril is one of the two holes in your nose through which you breathe, smell, and (sometimes) sneeze. Try not to get anything stuck in your nostrils; they're important passageways! Your nostrils are extremely important, since they provide a direct connection to your lungs — for air — and your olfactory nerves, which your body uses to smell things. You are almost certainly aware of your two external nostrils, but you may not know that you've got two more, inside your head at the very back of the nasal cavity. Most animals have nostrils, even fish — though they use theirs only for smelling, not for breathing. Fittingly, the Old English source of nostril, nosðirl, translates to "the hole of the nose."

Keep Reading on Vocabulary.com

Vocabulary lists containing nostril

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

This one performed the same series of tests: A camera went into my nostril.

From Slate Apr. 18, 2026

They introduced these virus suspensions drop-by-drop into each nostril of the piglets and monitored them for 5 days to see whether they displayed any symptoms, including changes in body temperature.

From Science Daily Mar. 18, 2024

The Mustangs scored nine points in a row while Watkins was in the locker room getting her right nostril plugged.

From Los Angeles Times Nov. 29, 2023

A moment later he returned, kneeled over her and placed his hand over one nostril before launching a "significant amount of mucus" onto her.

From BBC Sep. 18, 2023

One pixie with bright orange hair crawled down my nose, wrapped his hands around my nostril, and looked inside.

From "Rump: The (Fairly) True Story of Rumpelstilskin" by Liesl Shurtliff

The species also had a snout that extended farther beyond its nostrils than those of other crocodiles living at the time.

From Science Daily Jun. 13, 2026

Chesson, as trained, inhaled a lungful of air through her nostrils in a single deep breath.

From The Wall Street Journal Sep. 14, 2025

Stepping away into the L.A. mountains, you’ll be greeted with a sound bath from crickets and birds as the smell of pine, sage and bay laurel fills your nostrils.

From Los Angeles Times May 13, 2025

He’s a charming voice actor, and she pronounces every word through her nostrils, so they balance each other out better than any other couple on the show.

From Salon Apr. 24, 2025

Annabeth heard the giant exhale through his nostrils.

From "The House of Hades" by Rick Riordan

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