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In Japan, BL is the "modern" term for Shounenai, deffinition meaning "Boys love."
No matter how you spell it, english or kanji, you will get NOTHING on shounenai on a Japanese search engine, save dead sites refurring to retro mangas from the 70s & 80s.
by Allaiyah January 14, 2004
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Bl means Boys Love, it is often is used as another word for yaoi, which involves manga or anime. The book would most likely have the abriviation BL on it. Otherwise Warning this contains Gay things.
"YAY! SO I'M NOT LIKE ONE OF THOSE BL CHARACTERS!"
by Jeffrey Woods June 03, 2016
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Beautiful Lineswoman

From Seinfeld, "The Lip Reader"

Jerry: She is stunning.
George: Who, the tennis player?
Jerry: No. The lineswoman.
George: Yeah, she is one B.L.
Jerry: What's a B.L.?
George: A beautiful lineswoman.
by lighthouse_keeper April 13, 2009
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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.
by rjgoldsborough June 06, 2010
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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."
by whateverittakes June 14, 2010
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