A very large penis. Not only long, but has a girth that cannot be ignored. Known for preventing many woman from ever walking again and causing severe bruising. You might as well literally try to have sex with a hammer.
Girl 1: "Hey did you see Terrell at practice? You could totally see his junk when he was wearing that spandex!"

Girl 2: "I feel sorry for his girlfriend. The Hammer he is packing would kill me. "
by bigbear199186 February 5, 2011
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Another definition to this widely used term referring to the act of getting bludgeoned (possibly to death) with the tool known as a hammer.
"I got hammered at Home Depot last night."
by mlvd742 January 13, 2010
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(Seattle slang) adjective, used to describe ugliness in people, usually females, as if their hideous face could only be explained as "hit by a hammer".
She's cute right?" "Nah she's hammered!
by GHSchick April 2, 2011
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"Throwing down hammers" is when you land wicked tricks.
bob:who were you skating with?
tim:rob, man he was throwing down some hammers on the handrail.
by frone December 24, 2005
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The state of mind in which one is beyond the reach of the normal world. In some cases a good thing, because it is easier to score while hammered than while sober.
"So I got way hammered last night, and woke up lying in a dark alley next to a girl I never met wearing a trash can on my head. It was awesome!"
by KaiserMonkey September 9, 2003
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Definition 1: Hitting or working on a project/building with a hammer.

Definition 2: Banging as in sex terms, or giving oral head.
Example Definition 1: "I'm hammering this nail down so it will stay put."

Example Definition 2: "Your girlfriend was hammering between my legs...in bed!"
by Toon.Light.Asuka. February 15, 2009
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