the most funniest, best person in the world u could ever meet! she always brightens ur day with her smile and laugh. she is down to earth and a total ninja!
omg i wish i could be a san!!! she is soooo cool!
by matzy101 October 21, 2011
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Abbreviation for Sino-Atrial Node, found in the heart and a key part in the regulation of your heartbeat.
The Sino-Atrial node (or SAN for short)
is found in the mammalian heart.
by Keegs November 29, 2004
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Sanity.

Originally taken from the roleplaying game Call of Cthulhu. In this game you'd play as mortals trying to retain their sanity in the face of Lovecraftian horrors from Beyond. More recently however, the term has been used more casually to describe sanity in all its aspects. Almost always written entirely in capital letters, as it was on some of the character sheets for the game.
Person 1: "Did you see the first Dungeons and Dragons movie?"
Person 2: "Yes, unfortunately. It wasn't a horror, but I swear I lost SAN."
by skywyze February 28, 2008
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A formal and not classic name, really unique and also mean "Mr" or "Ms" in Japanese. Not the smartest but the most unique person.

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The matching letter: S+M & S+T & S+H & S+L & S+W & S+K.. etc
Is San here today?
by thylung March 5, 2017
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the word "son", but said/typed in the way a russian in brooklyn's brighton beach neighborhood would say/type it.
san san. lets go to ze club yo.
by Roman April 21, 2003
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