RAR 

1. (n) An uber l33t type of software compression. (v) to compress something using the RAR compression.
2. A roar; A sign of aggression

Dude, I RARed up your pr0n for you.
You compressed it with RAR?!
RAR! GO AWAY!

RAR by shavedGERBIL February 23, 2003

RAR 

rar is a compression method for many files using any 32bit program, as well as a word i use for anything and everything

something that's said as a conversation starter; rar!

also you know when you wwant to say something but the word escapes you? rar takes its place 100% of the time ;)

RAR by Ry | ThoRNe December 22, 2004

rar 

a phrase used when 1)someone is angry and doesnt know what to say, 2)someone is trying to imitate a lion or tiger, or 3)as a form of greeting

"rar whassupppp homie??"
"oh nothin you?"

rar by stripes8 January 9, 2005

rar 

Used by people who come from London England. Means cool, wicked.

Rar man that new track is phat.

rar by Kunzi May 1, 2003

RAR 

RAR, stands for Royal Australian Regiment. Infantry - Australian Defence Force

that soldier is from 2nd Battalion, Royal Australian Regiment (2 RAR)

RAR by Weapon63 September 24, 2006

RAR 

A form of cheating in chess; a way to distract your opponent/change rules. A universal Joke founded by celebrity Joseph Truelson.

Player 1 is 2600 Super GM
Player 2 is pathetically weak Joseph Truelson
Player 1: Checkmate!
Player 2: RAR!
Arbiter: Player 2 wins through unsportsmanlike cheating

RAR by RARARARARARARARAR June 27, 2020

RAR 

Rich Arse Holes - name given to people of a high social class.

The RARs at the university don't mix with us- nobody likes them

RAR by Sarahbeth123 January 2, 2009