how ever in the united kingdom it is a Royal Cunt hair.

As it is the metric system.

therefore it is strictly governed.

your mini cooper i a R.C.H. is out of adjustment.
by Brian Gibbs February 07, 2008
Top Definition
The smallest unit of measurement practically possible: A Red Cunt Hair.
by Anonymous December 15, 2002
A red cunt hair. Referring to the smallest unit of space, length, width, or height allowable.
I missed that bullseye by an R.C.H..
by Dave December 20, 2002
30 microns. Measured on a comparator by a physical scientist on his secretary's red cunt hair at the Defense Mapping Agency's Erskine Hall, Bethesda, MD sometime around 1980. No Shit. Your tax dollars at work.
"That RCH was yummy!" said Roy as he pulled it from his teeth.
by Joe Schmuckatella July 18, 2007
a very FINE measurement.
Go gets my hammer sos wes can move dis an rch.
by mushim October 24, 2003
A standard of measurement, the basis of the nano rch and the pico rch.
OK, Lem, we gotta move this mill just an RCH, so go easy with the hammer.
by Sneaky Snyde April 30, 2005
Raleigh Charter High School, a very prestigious charter school in downtown Raleigh. It is a hospitable environment to the growth and maturing of a variety of individuals. The blend of social and academic perfection led it to become top 9 on Newsweek magazine's school ratings in 2007. However, there has been a lot of recent trouble with drinking, drugs and other nonsense.
Hey, I go to RCHS.
Wow, I applied there. But I didn't get in. My life would have been so much better if I did.

Hey, I go to RCHS!
Oh, I know that school. It is really good at the academic competitions, like quiz bowl and world quest.
Yup, that is the one. We pwn.
by AnAlumni January 10, 2009
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