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2.
A city sunken under the waters of the Pacific Ocean. R'lyeh houses the Old One Great Cthulhu who lies dead but dreaming. When the stars assume the correct position, R'lyeh will rise above the water, but when the stars are not right, R'lyeh will sink once more.
R'lyeh's architecture does not follow Euclidian Geometry, but it is unknown whether it is hyperbolic or ellipsoid.
R'lyeh is no place for man
by wwwwoooooooo! August 10, 2006
 
1.
The sunken city inhabitted by Cthulhu and his minions. The city used to be on an island above the ocean but the stars shifted and sunk the city beneath the sea. Cthulhu is trapped there today, dead but dreaming. When the stars are right the city will rise again.
"In his house at R'lyeh dead Cthulhu waits dreaming."
by Zhayde Foxxe September 06, 2003
 
3.
The home of Cthulhu, the Great Old One who invades our dreams. Last reported on the ocean floor 47°9?S, 126°43?W, halfway between Australia, and Antarctica.
"Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn" In his city, R'lyeh, Great Cthulhu waits, dreaming.
by Cyberserker July 10, 2008
 
4.
(Pronounciation - Roo-lee-ah or Rill-AYE-eh)

1 - The home of Cthulhu in H. P. Lovecraft's "Cthulhu Mythos." See Wikipedia for in-depth information quickly, or read the book(s).

2 - A way of refering to one's hometown as being a complete nowhere or shithole.

3 - A very frightening place.
"Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn"
(In his house at R'lyeh dead Cthulhu waits dreaming)

"Where do you live?"
"Fuck, man... R'lyeh..."

"I just spent the weekend at my great-aunt's in R'lhey... *shudders*"
by J. B. Baby May 22, 2006
 
5.
A sunken city inhabited by Cthulhu, Masters, Germans, Phoenixes, Sandwich makers, and based god Vempyre. It is said that every once in a full moon; Vempyre and his minions come out at night and feed on poor souls to satisfy their lust for Wendy's. R'lyeh The Cathedral will rise from the deep, blue ocean to see fit the world is still in chaos and despair.
R'lyeh will never be forgotten
by beyond October 16, 2013
 
6.
i pronounce it "ruh-LIE-uh"
by graywyvern October 10, 2003