Nickname and abbreviation for the Russian composer Sergei Rachmaninoff. Widely used in the classical world, as an abbreviation for long names for compositions.
For example, "Rachmaninoff piano concerto #3 op. 30" abbreviates to Rach 3.

Guy 1: I heard you went to a concert in the weekend
Guy 2: Yeah, they played Stravinsky's Petrushka and Rach 2 & 3
by Xyko October 11, 2016
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when you have some sort of greenery (ie: broccoli or spinach) blatantly sticking in between one or more of your teeth.
"hey jenna, you got a rach" (wink wink)
by rosie and jenna February 29, 2008
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When you have diarrhea after eating a lot of ranch.
Damn I got the rach after eating too much hidden valley ranch
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Nickname for Rachel or otherwise known as a crazy fast flickering light!!
person 1. Hey Rache, whats up?
person 2. nm, child.

person 1. What is that rache back behind us?
person 2. i dont know? police lights?
by RayRaRoo January 10, 2009
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An extremely dumb person. No, not just a dumb person but the dumbest person you will ever meet. Like just a complete and utter dumbass.
Jake: Yo, that girl is soo dumb she doesnt even realise shes not hot and has tiny tits.

Bob: Ya shes a total Racheli
by Instine Fertumeir March 2, 2009
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often brunette and with green/blue eyes that are massive and often thought to be 'beautiful' by men called arnold. she is also someone with the a strangest laugh that doesn't make any noise, and scares people awaay. shes really annoying and doesnt have many friends which is really unfortunate for her.
her eyes are so rach
by jibbjibb August 26, 2010
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A person who try’s to bring u down who thinks they have depression and who fucks dogs and babies
You rach
by Bid small dick Dave October 22, 2018
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