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adjective meaning "so witty and well-defined that no further discussion is needed." Often used to describe a comment which ends an argument.
Wow, slamshut! There is no further need for discussion.
by Tommy Decat May 15, 2006
A rugged individualist, one who is admired as a hero by others.
"Man, that guy's really got it together-- he's a real SlamShut."