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1.
the tounge can taste 5 diferent things; salty, sweet, bitter, sour, and umami. umami is the flavor that certain meat protiens have. (saw that on good eats)
man that meat has good umami.
by Jiggy fly May 12, 2004
 
2.
A bullshit invited flavor that tv chefs pretend to be able to recognize, but can never define. Due to peer pressure they regurgitate keywords to make it appear that they know what it is, but in reality none of them have a clue.
"Dude I just saw Andrew Zimmern describe some butter as having an umami flavor. Last episode it was mushrooms. I'm pretty sure they are making this shit up as they go."
by Extramedium May 28, 2013
 
3.
Literal meaning: taste sensation that is meaty or savory and is produced by several amino acids and nucleotides (as glutamate and aspartate)

Slang: prounouced "you mommy"
This is the white version of "yo momma!"
After being insulted, Christian yelled, "UMAMI!"
by Hoszat October 17, 2007
 
4.
Japanese slang for the flavor well maintained vagina.
I sure like the taste of her sweet umami.
by MyTasty September 22, 2008