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3.
To sing with poor skills or no skill at all. ear splitting performance.
"dude, she cannot sing at all!!"
"how bad was she?"
"lookit, dwam, thats how bad she was"
"damn"
by Marcus Hung September 07, 2006
 
1.
A term coined by rapper Tech N9ne used at a time of excitement, usually when an attactive woman catches the eye (and vice versa when used by a female, although rare)
Example 1:
Tech N9ne:"I see somethin lookin' good I say Dwam!"

Example 2:
Person 1: "There goes that one girl with the onion booty you gotta just stare"
Person 1&2: (as girl passes) "DWAM!"
by Dayne White Bull April 07, 2010
 
2.
A trance-like state.
He was in such a dwam that he didn't see the car coming.
by Son of Groucho April 01, 2007