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1.
to drive about the isolated upper escalante neighborhood of Indian Hill (a suburb of Cincinnati, OH) while smoking marijuana. The affects are calming and mellow while taking in the supeficiality of the surroundings. Be careful though, the Indian Hill Rangers dont take kindly to outsiders.
"You wanna smoke this blunt on a Hiller?"
by Mr. T. S. November 17, 2006
 
2.
One who lives in Belmont Hills, a suburb of Philadelphia. Usually a hiller can be defined as a racist, football playing, beer drinking, back-road hick. They're usually quick to insult other ability to play football, ability to drink beer, or manhood. You can usually find a hiller at Belmont Hills park playing football, smoking cigars, or drinking beer.
"John's such a hiller, he had his first beer at the age of 9.....9 months"

Hiller: "Cut your hair you woman-looking idiot. No wonder why you suck at football..."
by The Ultimate Hiller February 18, 2009
 
3.
The hardest street in Belmont, California. Where all the shit goes down. People only drive down Hiller to deal drugs and pick up ho's. The tv show Gangland drove down Hiller and tried to film and episode there, No one came out alive. Hiller Street is riddled with dead bodies, bullet shells and 40's. It is a known fact that everyone on Hiller is strapped.
"Hey dude did you hear what happened on Hiller the other day?"

"Naw bro what happened?"

"Like 43 people got shot."

"That doesn't even compare to last months shooting, it was 113."

"Wow they don't fuck around in Belmont"

"Naw this isn't San Carlos"

"Yea I heard San Carlos is gay as fuck."

"Yea dude real talk. All the guys from San Carlos sit down when they pee, and all the girls stand up when they pee."

"Wtf?"
by HSB'z FINEST June 12, 2009
 
4.
another term for a hill billy or redneck
That guy bartender Brandon from Austin is such a hiller
by Rennsies July 28, 2011