look up any word, like blumpkin:
 
1.
Forward Looking Infra-Red, glasses for night vision.
Even if you see somebody with flir, it doesn't mean it's him.
by alvaropikolino November 17, 2010
 
2.
Flirting not ended by a cuppa T.
Flir as IT were can cause more than a stir.
by Hercolena Oliver June 28, 2010
 
3.
Meaningless word, can mean anything
Yo dawg! Check out da FLIR!

Im bout to bus yo punk ass in da FLIR!

Get dat FLIR ot har ya'll african-american siblings!
by Dawggy December 05, 2003