1 definition by Anna-Elizabeth

Top Definition
A) a sound used to describe boredom, or mediocrtie; B)to find something wholly offensive as to want to throw up to purge the sensation from the mind and/or body; C) average
Rachel and Jonny are sitting on a couch. Rachel asks Jonny what he's feeling. Jonny replies, "Blech."
by Anna-Elizabeth May 26, 2005

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