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1.
equivalent to saying "definitely"
You going to that party Friday?' 'Def-dogs, man, you know I never miss a party.
by alybarr June 16, 2010
 
2.
Name given to the coolest crew around. Taken from the blue bible's "break dance vocabulary bank". Members: Chris, Tom, Baye-Shan and Sophie. Definetly the most def-est crew around today.
A: Who are those mad dancers we saw at the school dance?
B: Yo, you don't know them? They were The Def Dogs, only the coolest crew around.
A: Wow, I saw them hanging out with their nice portable radio this afternoon.
by sobasha February 09, 2005