When you are laughing so hard that air comes out of your nose and you make a loud sound from the nose, this is an example of a snort.
The amount of cocaine you can inhale through your nose using a rolled-up dollar bill is an example of a snort of cocaine.
He snorted his disapproval.
When you want to express disbelief and do so by blowing air through your nose and making a loud sound, this is an example of when you snort.
When an addict inhales a narcotic drug through their nose using a rolled-up dollar bill, this is an example of when they snort.
She snorted with laughter.
Origin of snort
- From Middle English snorten to snort from fnorten variant of fnoren snore
From American Heritage Dictionary of the English Language, 5th Edition