BL

Abbreviation for Beautiful Lineswoman - a lineswoman at a tennis match that is attractive.

*Taken from the Seinfeld episode "The Lip Reader"*

Jerry: I can't get over how beautiful that lineswoman is.
George: She's a BL.
Jerry: A BL?
George: Yeah, a BL, a beautiful lineswoman.

BLS

People who pretend their lats are absolutely freaking massive when I’m actual fact they have none! Big lat syndrome

Wow Fred has BLS!

BL

abbreviation of beltlooping, the act of concealing an erection behind your belt or waistband

You should BL in case you get asked to stand in front of the class

BL

Bench and Leave- A common type of training used by lazy football players in a weight room when they only bench press and then leave,

Guy A- " Man i'm tired as shit today, fuck lifting."
Guy B- "Agreed, let's just BL this shit up."

BLS

Big Loser Status

That Dude Yelling At His Mom For Chips And Dip Has BLS.

bl

acronym for bush league. below ones standards, low quality, cheap.

Playing fùtbol with a crumpled up piece of paper is bl.

BL

Short for Body Language. Commonly used by PUA's.

Dude, you need to control your BL when approaching.