Somebody who is strong and good in a fight; a beastly person.
These guys started shit with us, and my friend Mike knocked out all six of them. He's a junkyard dog.
by George February 24, 2005
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A car, usually late 60's-70's era American muscle car, that is left in primer, and built up to beastly proportions, giving it a rough, loud, aggressive presence.
"My friend's 500 horsepower, primered '70 Chevelle is a real junkyard dog..."
by CeeCee666 June 30, 2009
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1. a particularly vicious and dangerous dog, especially one chained up as a result of it's attacks

2. a particularly vicious and dangerous person

(dogs of such a temperament are frequently used to guard junkyards in movies)
If I have to deal with that junkyard dog again I will give it's owner a piece of my mind.
by The Return of Light Joker July 26, 2009
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is a paid political operative, an attack dog on a leash. A Sunday morning talking head. yelps about the virtues of the Democratic faith.
by Liberal killer December 26, 2009
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a junkyard is an established male who doesn't shit from anyone... not even another junkyard dog. any female who is already intimately affiliated with a junkyard dog is called a "bitch". any feamle in pursuit of a junkyard dog is calssified as a bitch in heat.
"Hey dude aren't those the junkyard dogs over there?"
"Yea man watch out, they dont take shit from nobody, not even eachother, oh and i think those two girls with them are bitches."
by PitbullJYD420 September 8, 2009
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Hey did you hear about Betty Sue?
Yeah wasn't she raped by a hobo?
Yeah that junkyard dog nailed her when she was taking out her trash.
by John Lee Mark April 27, 2010
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Overly teethy aggressive penile oral stimulation.
Damn, Kathy, you were on it like a junkyard dog.
by ToeBang January 25, 2017
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