To make a sudden forceful sound through your nose, often showing contempt or amusement, or to laugh or breathe in this way.
From Middle English 'snorten,' imitating the actual sound made by animals like pigs and horses. The onomatopoeia entered English around the 1300s and has maintained its original sound-imitative nature.
Snort is a perfect example of onomatopoeia that sounds exactly like the action—when you hear the word 'snort' out loud, you're basically hearing what the action sounds like, making it one of the most naturally fitting words in English.
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