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7.
PLB
meaning Persistant Little Bitch.
aka: someone who doesn't give up until their point has been made, or until they get what they want. Usually someone who is very stubborn.
Melissa: (adds an unflattering picture of Rebecca on facebook)
Rebecca: DELETE
Melissa: Nooo! It's so funny!
Rebecca: MELISSA DELETE THIS NOW. Am I going to have to be a PLB on your ass?

"Don't be such a PLB!"
by Savage_Cabbage September 14, 2009
 
1.
PLB
Abbreviation for Prancing Little Bitch - Originally a DOTA term for players using the character Encahantress, a horse that prances around, the term has extended into general use in the modern League of Legends for a player who prances around farming minions instead of joining team-fights.

The term is also applicable in everyday life for a person who flakes out on fun activities for unknown or unjustified reasons.
Jim: Nick what the hell, you missed the team-fight, we got slaughtered.

Nick: HAHAHA, I'm watching my lane!

Jim: What a PLB

---

Ben: John, are you in for this game of Beer-Pong?

John: Hold on, I'm playing with this scorpion I just found.

Ben: Get your ass over here, ya prancin' little bitch, The team needs you!!
by dangerzone116 September 13, 2011
 
2.
PLB
the abreveation for: Pussy Licking Bitch
“Shelby, why do you have to be such a PLB”
by what1432 June 17, 2009
 
3.
Post-Lunch Blues, or PLBs, is the depression one slips into after lunch when one realizes he or she is only half way done with the work day.
Coworker: Man, we still have to work 5 hours today.
Me: Yeah, I have a bad case of the PLBs.
by Cawken Bahls January 29, 2014
 
4.
PLB
It's the abreviation for Pretty Little Bitch.
John: What ya said?
You: Oh, c'mon PLB, c'mon!
by MartinBB February 18, 2014
 
5.
Street name for a top-of-the-line sports enhancing supplement. Stands for "Pure Laufasa Blood". Said to be a mixture of 50 different kinds of amino acids and a hint of testosterone. Illegal in Iowa, Vermont, the East half of Canada and all of Europe except Amsterdam (cuz, shit, everything's legal in Amsterdam)
I heard we have squats today. Bro, let me get some of that P.L.B. before we lift today.
by Jaisizzle July 13, 2011
 
6.
PLB
acronym for "Pissy Little Bitch"
usually referring to male with dramatic female tendencies
I seriously cannot handle that PLB whining about the carbonation in his fruity effen cocktail.
by brobi March 17, 2010