Libre
Definition
"During the early years of the 21st century, the word "libre" acquired meaning in English, largely on account of the adoption of "FLOSS" as an accepted acronym for free/libre and open source software and common use of the term "software libre". "Libre" does not suffer the same ambiguity in the word "free" and many people prefer to say "libre knowledge". Nevertheless, the terms " free knowledge", "free culture" and "free content" are also widely used, and definitions have been posted on the Internet based on the free software definition." (http://communities.libre.org/philosophy/saylibre)
More Information
Software Libre = Free Software