a person, usually a redneck southerner or a white guy trying to act like a rapper; who always says "y'all". Often, they tend to say it twice in the same sentence.
Man, that redneck over there is such a y'aller
by The Kentucky Yankee August 01, 2004
The deep southern drawl contraction of "you all are".
1. "Hey! We ain't no freakin' queers! Yaller gay!"
by Sean Geranium March 14, 2007
Look at that yaller, let's go kick his knees out.
by brandon vincent April 04, 2005