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1.
Nelf: Acronym for the playable race "Night Elf" on the popular Massively Multiplayer Online Roleplaying Game World of Warcraft.
Ugh I hate Nelfs, Everyone and their mother plays one!
by Neeru July 30, 2006
 
2.
Short for the most used and most hated World of Warcraft race in the game usually a hunter.
Look that Nelf is danceing on the damn mailbox again
by Taures July 30, 2006
 
3.
sticky fluids mixed with lint and found underneath a fat persons rolls.
"During my physical exam the doctor noticed that i had alot of built up nelf... it was embarrassing."
by Sobah83 March 05, 2007