Top Definition
A large amount of snot that comes out of your nose and gets all over your face/clothes/innocent bystanders when you sneeze.
1.) Man, this cold gave me a snavalanche so bad I had to change my clothes.

2.) Don't bring that cat near me unless you want to see a monster snavalanche!
by THDaddy March 19, 2008
4 Words related to snavalanche

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