It has 2 main meanings. lol or LOL means laught out loud .It is used to express that somebody/something cause you laugh loudy LoL - is acronym for Leauge of Legends. It is a multiplayer online game.(a very popular game now).

Lol means l: laugh o: out l: loud means laugh out loud

"The mean" means "the average". You want to know "the meaning" (the definition).