FLS 

FLS = First Line Support'ers.
Is nice people who help alot, in Forum's.
Helping n00b's, like live FAQ.

FLS = First Line Support

FLS by Ohke November 10, 2008

FLS 

FL Studio or FruityLoops Studio is an instrumental/beat making program used by many professional producers to make music.

A: Deem001 uses FLS.
B: What's that?
A: FL Studio or FruityLoops Studio. :]

FLS by TheGosuBox January 14, 2010

FLS 

Flu-Like Symptoms (fever, chills, headache, fatigue.)

The acronym is used heavily in the medical community. It has yet to have been thrown around wildly on television medical dramas, so it's not part of the pop-culture medical lexicon.

John has had FLS for three days now, I think he might have the flu!

FLS by MeakPhronkey July 22, 2008

FLS 

Fat Leg Syndrome. A woman with fat thighs and legs. Most likely fat ankles too.

--Taken from Ray and Norberto.

That girl has FLS!

FLS by GMoney Musikbyg January 31, 2009

FLS 

Fake Lesbian Squad: The wanna be lesbians at any school

"Look Ryan, here comes the FLS." or "Anoryia! The FLS is growing!"

FLS by Ohgeegee September 5, 2018

FLS 

Short for Fat Leg Syndrome. Occurs when you wear boots that are too big and they give you the appearance of fat legs.

Liz wore size eleven boots that she got on sale, even though she's a size five. needless to say, it gave her FLS.

FLS by lizisapiz April 14, 2010

FLS 

Feel Like Shit

I FLS

FLS by BigDickDaddyStalin December 6, 2017