Like a burp, but with a hint of puke.
"When I saw the monkey pee in it's mouth, it made me wanna blarch."
by KingCone January 16, 2009
1 more definition
Blarch was an exclamation originally used in Ancient China, in the provinces near present-day Shanghai. It was used most often when one burned one's tongue and distorted natural pronounciation habits.
Lao Gao took a sip of the soup and unexpectedly screamed "blarch!"
by SuperShooter! January 23, 2005