dno 

dno is a shortened form of 'don't know'. it's often used in chatrooms or IRC

person 1: what are we going to do now?
person 2: hm.. dno

dno by aLer.r0x May 5, 2005

DNO 

Abbreviation for Deez Nuts Online a fake RPG used to prank unsuspecting victims into a classic Deez Nuts joke.

Prankster: “Hey have you heard of the upcoming RPG DNO? It looks really fun!”
Victim: “No I haven’t… what does DNO mean?”
Prankster: “Deez Nuts Online!”

Hilarity ensues…

DNO by Dusk54 July 17, 2021

DNO 

Dyke Niggas Only. The slang word for secret lesbian meetings where the dykes get together and have a duck fest.

“Dude I heard Alyssa talking about some meeting with a lot of girls, let’s go”

“Nah bruh it’s dno”

DNO by crazyboi6969 January 31, 2019

DNO 

DNO stands for Dudes Night Out. These occur once every 2-3 months. They usually occur when some bros just want to chill on a Sunday night. The DNO can start with a few beers and will end with what ever the best movie in theaters is. DNO's can not involve women in anyway what so ever.

Dude 1: Yo you know how we tried to have a DNO this weekend.
Dude 2: Ya why was it called off?

Dude 1: Because someone thought they would invite a chick.
Dude 2: Wow he would, I can't believe he ruined it.

DNO by Brochacha69 November 5, 2010

DNO 

Dummy Number One

You lost your keys? DNO...

DNO by cleanhouse September 25, 2009

DNO

Deaf Night Out-
It is a social gathering- often at cafes, bars, or public spaces where Deaf people come to together to socialize in ASL, build community, and connect. Hearing people who are learning ASL and/or know ASL sometimes attend, but the expectation is that the space centers Deaf culture and communication.

A DNO is happening the day after Thanksgiving; it's free!

DNO by momentsbylori January 9, 2026

Uno Dno

Knowing that you know nothing is acquired knowledge of something.

Uno Dno and dats numero uno.

Uno Dno by Hercolena Oliver May 2, 2010