NOS'TRIL, noun [Thyrl or thirel is an opening or perforation; thirlian, thyrlian, to bore, to perforate, to thrill, to drill. See Drill.] An aperture or passage through the nose. The nostrils are the passages through which air is inhaled and exhaled in respiration.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI