Abbreviation for "also known as," useful when defining terms that are known under two or more names:

Shortwave radio, a/k/a World Band radio; or

Taiwan a/k/a Formosa.

Also pseudonyms vis-a-vis given names:

Victoria Beckham a/k/a Victoria Adams and Posh Spice.

A simplified use has more recently emerged: simply to type the letters. omitting the slashes (a/k/a "virgules") in between -- it is rare that anyone would confuse "aka" with a word called something like "akk-uh" and "aka" is easier to type:

David Johansen aka Buster Poindexter.

Reginald Dwight aka Elton John.

But both spellings are currently in use:

Do you have any biographical information about writer George Orwell, a/k/a (or aka) Eric Blair?

Although an abbreviation, note that no period is required.

.
from a Wanted poster: Wanted: Johnny Breeze, a/k/a John Brahms, a/k/a John Briscoe, a/k/a John Buchanan . . .

(contributor's note: not a real person).
by al-in-chgo March 05, 2010
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1. A short version of "okay"

2. A very rude, hateful way to agree or acknowledge.
A: Wow, you really hurt my feelings...

B: k

A: ...I'm gonna go now...

B: k

A: I'm sorry :'

B: k
by AccurateSabotage February 27, 2011
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K-On! (けいおん!) Is a Japanese four-panel comic strip seinen manga written and illustrated by Kakifly. The four main characters in the beginning of the story are Yui Hirasawa (Guitar), Ritsu Tainaka (Drums), Mio Akiyama (Bass), and Tsumugi Kotobuki (Keyboard). Later, Azusa Nakano (Guitar) joins the Keionbu (Hence the anime's name, K-On!).
K-On! Was a wonderful Manga/Anime! I want to watch the entire series again!
by MinaGlaca August 13, 2012
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The "Weapons" board of 4chan.
A regular poster on /k/ is usually referred to as a /k/ommando, and discussions usually involve modern weaponry, but this is by no means exclusive.
Like most other boards on the site, it is primarily likened to a river of shit with gold nuggets on the bottom. Whether or not it is worth panning is entirely up to you.
/k/ - a magical place
by Zolotros July 30, 2012
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The letter people text you when they don't want to talk to you anymore.
Person 1: Cool, I'll talk to you tomorrow then?
Person 2: K
by Skitzophrenic December 11, 2012
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The text you receive from your girlfriend, really meaning "fuck you"
"babe im sorry" -boy
"k" -girl
by BoobMaster95 April 27, 2011
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Exactly what you do NOT reply to a long, heartfelt message sent over ANYTHING.
Maurice: *reads heartfelt message from girlfriend, replies k*
Girlfriend: *texting* Go fuck yourself.
by Intelligence001 June 14, 2016
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