"GL" or "gl" in the manga, manhwa, manhua universe means literally girl's love. Which is a romance genre when both of the main characters are females. Often interpreted as "Yuri" for the Japanese community which means Lily. The fans of the genre are simply called Yuri enthusiast/fan. Another variant for the opposite sex is bl, which you already know it, means boy's love (I'm not into that).
Me: "Hey, did you read the gl manga I recommended you?"
Yuri fan: "Oh, Kimi ni Tsumugu Bouhaku? Heck yeah dude, that manga sure be vibin'!"
Yuri fan: "Oh, Kimi ni Tsumugu Bouhaku? Heck yeah dude, that manga sure be vibin'!"
by Le Bruh December 27, 2020

by hollyhandeled.12345 October 24, 2017

Normally used is most gaming online lobbys. the term refers to GOOD LUCK. may also be used in conjunction with GG(good game) or HF(have fun)
by G[r]ey December 17, 2004

by Michael Grechka August 31, 2003

refers to either good luck, or guild leader. The latter of the two is mainly used in World of Warcraft.
by Nico69 October 24, 2006
