1.) the smallest measurable unit that can be visibly seen
2.) the smallest measurable unit (about 0.001 femtometers)
3.) (Nautical, Nuclear) a quickly estimated unit of length equal to one hundred quadrillionth of a meter, often abbreviated as RHC when females or effeminate males are present.
Dammit! If I could only get that screw in another red cunt hair, this lid could seal!
by NeightR March 9, 2006
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red c hair smaller than a c hair because red hair is the finest hair in terms of thickness
by Bruce Spinner April 5, 2006
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he is a rock. no. THE rock. but red. THE rock but RED. did I mention that he is red. and spikey
"omg did you hear about red spikey haired rock?"
"oml yeah, he was with angry porcupine the other day"
by jhaywhypapi November 5, 2021
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Black hair is better than red hair
Black hair is better than red hair
by Real Alberto June 6, 2022
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1. Phrase often said to notify someone you are in a squabble with, that you are going to strike them, similar to how one would smack their adoptive red-haired child.
Guy: Hey buddy did you eat my last sweet cuppin-cake?

Buddy: Yeah i did guy, and what are you going to do about it?

Guy: Mother fuck! I'll smack you like a red-haired step child at K-mart!
by Chass Master Plus April 14, 2009
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Hair that has been tousled to the point that it looks as if the person afflicted has just left the Red Light District. The condition generally affects males. Sometimes referred to as RLDH, for short.
Girl: After making out for awhile on my couch last night, he got some serious Red Light District hair.
Friend: Cute.
by snizzlepoof June 24, 2010
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Whenever someone is being a complete moronic douche-bag of a whore, it is common to call them this name. Only use in cases where the women looks like an ugly lesbain.
Guy #1: Man that bitch uses the word Retarded while her kid looks Autistic!

Guy #2: That ugly stupid bitch is dumber than a short haired red-head.
by Bitch Imsmarterthanyou January 24, 2012
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