Three letter initials most commonly used by gangs to identify their neighborhood, where as the (B) may stand for the name of a certain street and the (ST) probably stands for the word street. As in "Bryant Street 13, and Blythe street 13", both gangs located in the San Fernando Valley region of Los Angeles. "BST" could also stand for "Breed street 13" in the East L.A. region of Los Angeles.
The homie calls those fools from BST: "burros".
by BiggDaddyBuggers818 August 29, 2007
Top Definition
British Summer Time (BST)

A time zone in England.
Yo man... BST is so much cooler than GMT!
by Chris W. July 13, 2005
Black Standard Time, which also means 'late'
Boy: "Where is Shanishiqua? The movie is starting."
Girl: "Well she's on BST so she'll be here in 20 mins"
by irish99 July 15, 2011
Blood, Sweat and Tears.
"My dream house was BST."
by Latinlabel May 18, 2005
Belligerent Sexual Tension, when two parties show hostility to each other in an effort to hide their sexual tension.

Both have acknowledged their attraction but try to refuse to act on it or choose to ignore it by acting hostile towards each other.
You can just smell the BST rolling off the two rivals.
by jpeguser March 26, 2013
Bright Shiny Thing, a forum owned by Nett
BST is love (a signature of Charli at BST)
by Alexandra May 15, 2004
Acronym for "Big Saucy Tits". Refers to extremely nice breasts. Stems from the spelling of breast, containing B, S, and T in that order. Because BST stands for "binary search tree" in computer science, the word "balanced" usually proceeds BST.
Wow, Lindsey's hottest feature is her rack of juicy balanced BSTs.

The second I looked up and saw some massive BSTs, I immediately knew I was staring at Bird's mom's beautiful bosom.
by Big Dog Football Boss October 29, 2013
"better safe, than sorry"
In most situations, BSTS is the way to be.
by justoldsteve June 01, 2006
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