a map that funnels the action through three separate lanes. the middle may or may not connect all three; slang for "three-lane map"
person 1: hey, are any of the maps in CoD: WW2 any good?
person 2: no, they're just the typical asian three-laner, man. honestly that game is just shit in general, so just save your money instead.
This term is used to describe an incompetent Top/Mid laner in games under the MOBA classification
Me: "How's the grind been going, you still gold rank?"
Friend: "It's been going great, i've been carrying my teams today."
Me: "How come?"
Friend: "Idk, I guess Im just better now I have won my lane every single game."
Me: "Bro is not HIM, you have just been getting tons of Arn-laners."