1. the two openings in the nose through which air passes when breathing
Usage: plural form of nostril

Examples

• She flared her nostrils in anger.
• Cold air rushed through his nostrils as he stepped outside.
• The horse’s nostrils widened as it caught the scent.
• He pinched his nostrils shut to avoid the smell.
• Steam came out of her nostrils in the freezing weather.
• The doctor examined the patient’s nostrils for signs of infection.