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A term used in Karate

or

A popular rhythm game.
1. Fighter 1: Are you ready to fight?
Fighter 2: Osu!
2. Tom: What are you doing Simon?
Simon: Playing a game. It's called osu. Wanna try it?
by 123adi May 14, 2016
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osu! is a freeware rhythm game originally for Microsoft Windows. It is written in C# on the .NET Framework. The game has also been ported to Mac OS X, iOS, and Android. Its gameplay is based on commercial titles including Osu! Tatakae! Ouendan, Elite Beat Agents, Taiko no Tatsujin, beatmania IIDX, O2Jam, and DJMax.

Despite the stupidity stupidity of some; it is pronounced Oh-Sue. Not OOS.
A: Have you heard that game, osu?

M: Yeah it's like guitar hero except you pick the songs.

A: Wow sounds cool. How do I say it?

M: Oh-Sue.
by Oh-Sue September 06, 2014
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(usually pronounced: oos )

A term used in karate or mixed martial arts schools meaning yes, hello, goodbye, and I understand. A general affirmative.
Teacher: Is everybody ready?
Students: Osu!
Teacher: Begin!
by Guildenstern14 November 12, 2009
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OSU! is an open source music rhythm game developed by Dean Herbert at 2007. The game consists of four game modes: osu!standard, a circle clicking simulator; osu!taiko, a drumming emulator; osu!catch, a fruit salad catcher; and osu!mania, a key smashing synthesizer. For more info, you can visit: osu.ppy.sh
I heard that OSU! has become more and more popular.
by Jin6000 March 18, 2019
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A Japanese Word meant to show respect. It's used for evens like Karate before the fight.

"OSU" pronounced like "os".
by James Laserbeem August 26, 2005
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1) Oklahoma State University, located in Stillwater, Oklahoma with branches in Oklahoma City, Tulsa, and Okmulgee. Its official colors are orange and black, as opposed to colors picked by OU matching the blood on their white away-game uniforms. OU fans would resent this.
2) School that jealous OU people and OU fans hate for its superior academics and 43 national championships.
I went to OU instead of OSU because it was cheaper, there is no other logical reason.

I wish I had went to OSU because the dorms at OU are shit.
by Ross Moffett November 17, 2003
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