look up any word, like kappa:
 
1.
A walking traveller, usually over mountanious paths.
The hiker finally reached the summet.
by Chaos_Side October 11, 2006
 
2.
Video game lingo often used when playing a first-person-shooter online, meaning to run around the map whilst making many kills by repeating the same tactic(s); the opposite of being a camper.
Greg: Alright, so I was playing Modern Warfare 2, and I tried camping at Crash.
Fred: And...?
Greg: This guy kept running around the map tac knifing everybody. He even called in a nuke!
Fred: What a freakin' hiker!
by TheJeebusofSuburbia May 26, 2010
 
3.
a male with a very large penis that can venture into "virgin" territory.
Porn stars are usually hikers. They venture way, way back into the virgin territory.
by Max-Dawg July 05, 2005