An 

"An" is used before all words beginning with a vowel (a,e,i,o,u) or an unaspirated h eg.

An apple.
An orange day.
An awful weekend.

A window.
A train.
A good day.

An by xiaNia May 1, 2009

AN 

Author's Notes...usually referring to a fanfiction Usually comes at the beginning or end of a fanfiction

I hate it when people add their own commentary in a fanfiction, "Raito's hands slid down L's back, finally closing around his ass (I said ass, teehee~!)" For the love of god, that's what AN's are for, you morons.

AN by crescentindigomoon October 22, 2006

An 

Indefinite article used in the English language when the following word starts with a vowel.

An elephant

An by someome who lives April 18, 2023

An 

Pure meanie and should be sent too the gulag

A wild An right there!

An by Commie Pingu June 24, 2022

An 

A Vietnamese name that has a nonexistent "g" sound at the end. It is commonly thought of as a girls name and can lead to a variety of bad ass nicknames (ex: Anus or Analsaurus Rex).

Random Guy: Oh hey Ang
An: Oh you don't actually pronounce the g at the end
Random Guy: Yeah whatever you say Analsaurus Rex

An by NoCreativity October 2, 2009

An 

An is the middle two letters of a lazy person who's up to noo good. They hate on everybody and is a loner.

Look at him he's such a 'an', picking on those poor kids

An by Margaret hansler December 7, 2020

AN 

Abbreviation for anal night.

Jake: Hey Lisa, is tonight AN?

Lisa: NO YOU DUMBASS! It's tomorrow! I put it in your calendar a month ago.

Jake: Ahhhh true. So sorry honey. I won't forget next time I promise! I love you.

Lisa: Ahhh me too bear.

AN by Oldestspice January 18, 2017