Kid who swears and drinks a lot and is not liked by Hometown
That kid is such an OS
by TenIsGOAT August 16, 2019
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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!!!
by Chow October 28, 2004
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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.
by Klienmahn November 8, 2007
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the opposite of so. when a conversation dies, instead of saying so, say os. it will jump the conversation to a new level to keep the flow.
...dead silence.

os.

What ? Os ?

Yeah the opposite of so,.....proceed from here
by Will Hamilton March 11, 2004
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os² is the smaller version of the words oh shit son, or oshtson
n00b1:yo man that guy just got a headshot with a shotty
n00b2: os²
by dipsert November 30, 2005
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