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1.
Something that suprises or excites you.
*see's an extreamly sexy girl* dahm!! You see that ass!?!
by SOME SEXY HOBO July 17, 2008
 
2.
A word of power and strength, noone can live up to dahms

Also seen sometimes as Dahminator
you almost are as good as dahms!
by Jake Smith September 13, 2004