A GNU/Linux distribution that isn't as easy to install as Red Hat-based distributions, but is very stable. You have to build it from source. It's worth it, though, as it builds into your system.
It takes three commands to install Gentoo.

# cfdisk /dev/hda && mkfs.xfs /dev/hda1 && mount /dev/hda1 /mnt/gentoo/ && chroot /mnt/gentoo/ && env-update && . /etc/profile && emerge sync && cd /usr/portage && scripts/bootsrap.sh && emerge system && emerge vim && vi /etc/fstab && emerge gentoo-dev-sources && cd /usr/src/linux && make menuconfig && make install modules_install && emerge gnome mozilla-firefox openoffice && emerge grub && cp /boot/grub/grub.conf.sample /boot/grub/grub.conf && vi /boot/grub/grub.conf && grub && init 6

That's the first one.
by Victor March 9, 2006
Get the Gentoo mug.
A fast-growing distro of Linux, geared towards optimisation and people who like to tinker than other distros. It's straight forward to install if you RTFM, but still takes ages as it compiles everything from source code, so that it is faster and more optimised for your system.
The Debian user generalised all Gentoo users as elitist pricks, when, ironically, he was being the prick.

(I'm not generalising- this is a hypothetical character.)
Get the Gentoo mug.
Watching shit scroll by for hours makes me a Linux expert overnight!
I like gentoo and hondas.
by Aphex October 31, 2004
Get the gentoo mug.
THE linux distro. The absolute best one there is. It's actually not as hard to install as you might think. They have an awesome installation guide, follow it exactly, and you're as good as gold, furthermore you compile your own kernel, if done right, all your hardware is supported 100%. If your software isn't listed in the gentoo repo, install layman to get unsupported packages. One of the best things about gentoo, is that your software is ALWAYS up to date, you compile the very latest version yourself, you will never be behind the times. Also due to the awesomeness of USE flags, you can compile your software JUST the way YOU want it to compile. There is no limit to what you can do, if you use gentoo!
by Dragos240 January 31, 2010
Get the gentoo mug.
The favourited distrobution of Linux that I've found among my favourite Linux geeks. Supposed to be a bit less newbie-friendly than Mandrake, but meh. It has a really nice installation guide and FAQ.. about 40 pages all together. I've never seen anything like that with other distros.

Also a small fast penguin or something.
Gentoo has a lot of documentation, man. That's a very good thing. All my Linux-geek friends like it.
by Chrissi January 31, 2004
Get the gentoo mug.
n00b linux distro similar to suse, in which a user must spend the better part of their weekends configuring, just to get installed. Created for losers by losers, it stands above the much better distros due to sheer luck and stupidity
I'm a gentoo ricer! Hear me R04R!!
by *nixon February 7, 2005
Get the gentoo mug.