os 

An abbreviation for oh shit

"Os! Do you smell baby Sarah? I thought I changed her a few minutes ago."
"Os?"
"I don't wanna cuss in front of the child."

os by kpbostonianakamrsadams June 22, 2009

OS 

Probably SKINNY! and a dumb h03

My name is os I’m a skinny h03

OS by Rllewe July 24, 2020

OS 

Old School or Oldschool.

That trick was insane OS!

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

OS by Vegard & Lars May 9, 2006

os 

acronym for operating system. the best one is teh Mac OS, followed by Unix, then Linux and finally Windows (hands down the worst OS on earth)

Apple and Microsoft are competing against each other to get more people to use their OSes

os by teh_applegoddess July 7, 2003

OS 

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

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

OS by :) February 5, 2005

Os 

Latin for "mouth". Used to describe the small opening of a woman's cervix, either on the vaginal side of the cervix, or on the uterine side.

Pronounced: "Oz" or "Oss"

"The cervical canal has a constricted opening or os at each end. The internal os communicates with the cavity of the uterus; the external os, with the vagina."
Knowledge is power.

Os by PupNTaco June 25, 2005

os 

Operating System. Windows is the only one worth your money, with the downside of constant errors (and the blue screen trauma).

os by Bastardized Bottomburp May 3, 2003