ONI

Acronym for Office of Naval Intelligence, in the Halo book: The Fall of Reach. Possibly also used in the rest of the Halo series.

"Red Leader, sir. We've got something for ONI. We've spotted some kind of Covenant race." -Page 185, The Fall of Reach.

by Noob4sure July 20, 2008

Oni

1.Japanese Devil or Demon usually pink or purple in colour, they're tall, strong, ugly and stupid.

2.An underrated shoot 'em up for the Playstation2.

1.That Oni bit off my arm.

2.I played Oni on my PS2 last night.

by lordpestilence August 4, 2005

Oni

O-nee

1. A game created by Bungie west studios. It featured a revolutionary blend of hand to hand combat and shooting.

2. Any game that is awesome, but gains bad reviews, and/or is abandoned for the sake of a Microsoft(TM) related project.

"Wow, this game is awesome! It will probably end up being another Oni".

by Onimotoko April 19, 2011

Oni

A level of difficulty in Dance Dance Revolution. ddr

Theres the beginner, light, heavy, and then the oni mode

by Victor December 14, 2003

Ony

"Ony" is an abbreviation for a dragon named "Onyxia" in the popular MMORPG WoW (Massively-Multiplayer-Online-Role-Playing Game World of Warcraft). Ony was originally released in "Vanilla" (original) WoW but was updated for end-level players once again the second WoW expansion "Wrath of the Lich King".

OMG we just got OMGWTFBBQPWND by ONY!!!

by World of Warcrack Addict January 16, 2011

Onis

The visual excess pubic hair out of women's underwear

Boy at the beach, "Did you see her? She had major onis."

by Trivet July 3, 2008

ony

defined as a moldy turd

person 1 “ugh man what is that”
person 2 “i think it’s a ony”

by realssss May 28, 2020