R, also called GNU S, is a strongly functional language and environment to statistically explore data sets, make many graphical displays of data from custom command line, shell ...
http://www.r-project.org/

R (/ ? ?r /, Hiberno-English: / ? ?r / [citation needed]; named ar or or) [1] is the eighteenth letter of the basic modern Latin alphabet.
http://en.wikipedia.org/wiki/R

In computing, R is a programming language and software environment for statistical computing and graphics. R is an implementation of the S programming language created by John ...
http://en.wikipedia.org/wiki/R_(programming_language)

R 1 (är) A trademark used for a movie rating indicating that admission will be granted only to persons of or over a certain age, usually 17, unless accompanied by a parent or ...
http://www.thefreedictionary.com/r

Network of FTP and Web servers around the world that store identical, up-to-date, versions of r code, documentation.
http://cran.r-project.org/