OS

Oddly satisfying

That's OS

OS

Kid who swears and drinks a lot and is not liked by Hometown

That kid is such an OS

OS

Operating system. Simply, a program that runs your computer. Examples of an operating system are CP/M, DOS, Windows, Mac OS, Linux, and Palm OS, though there are many more. One will oftentimes become overly attached to their OS, preaching it as though it were a religion and shunning all who use anything even slightly different.

Man: My OS of choice is Windows XP.
Woman: My OS of choice is Mac OS X.
Man & Woman: (killing eachother)
Supa-Nerd: My OS of choice is CP/M! 8086 FOREVAH!!!

OS

Abbreviation for Operating System

A good list of popular Operating Systems are listed here (taken from "www.bellevuelinux.org"):
AIX
Amiga
BeOS
Darwin
FreeBSD
FreeDOS
GNU/Hurd
HP-UX
IRIX
JavaOS
Linux
Mac OS X
Microsoft Windows
MINIX
MS-DOS
NetBSD
OpenBSD
Palm OS
QNX
SkyOS
Solaris
TRON
Tru64

An operating system is the main software that runs a computer, without an operating system a computer is almost useless.

There is no best operating system, they all have their advantages/disadvantages and were all developed with some kind of goal in mind.

1: All the company's servers used Unix (OS), but now they use Linux (OS).

2: George had a quadruple boot with multiple OSs running on his PC, it ran Microsoft Windows Vista Ultimate, Mac OS X Leopard, and two flavors of Linux.

OS

Probably SKINNY! and a dumb h03

My name is os I’m a skinny h03

OS

Old School or Oldschool.

That trick was insane OS!

That suit is so OS! (Colorfull suit from the 80's)

OS

Operating System. Some are designed to be available to everyone (Linux :).
Some are designed to take your money (Windoes :().

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# Examples of OSes #
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Linux
Free/Open BSD
Solaris
Unix
Windoes
MacOs X
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