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4.
1. A mound of fecal matter with emits an odor that is not pleasent.

2. A slang reference to an item or person which refers to the subject being unusable, of shoddy construction, unwanted, unreliable, or unacceptable in some fashion.
1. I just stepped in a huge pile of shit left by the mule.

2. Windows ME was a huge POS.
by k_semler August 10, 2008
 
1.
See AOL.
This pile of shit takes up 7 gig and makes me freeze up when I right click.
by Gikata March 10, 2004
 
2.
1.a carefully placed pile of poo that is made with a shovel.

2.also can be somthing that is broken/wrecked/ destroyed or just somthing that is bad.
1.Holy fuck i have never seen such a neat & carefully placed pile of shit

2. im glad i got a new car that old one was a pile of shit
by Talon May 31, 2004
 
3.
a pile of shit, otherwise known as POS, can be used to describe a person, or pile of shit, that seems nice and smells nice, but in reality, you realize that they're just a big pile of shit, and only pretended to like you so they didn't have to go to the prom alone. Fucking POS.
a pile of shit, a big bitch, someone who will use you and then shit can you. her friends suck balls.
by Huge E. Rection June 10, 2008