adj. something that is utterly cool. This phrase had its climax in the 1980s, but is experiencing a revival in indie circles.
Carl, your Nietzsche tattoo is def as eck, though you should have asked your mother and I before putting it on your face.
by hotfrenchtoast April 30, 2005

by Stevonnn September 30, 2006

a 5 membered band from britian, famous in the 80's, known for being a part of hair metal, drummer has one arm
by Ctobe January 8, 2007

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.
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 9, 2005

A fairly effeminate feathered hair British band that created a handful of pretty listenable rock songs, overproduced out the ass until they aren't as lame or glammed out. Most people who like this band are annoying women who are trying too hard to be cool. Most people who hate the band don't listen to much outside of either Slayer or on the other end of the musical spectrum some kind of other pop swill like Donna Summer/KC and the Sunshine band.
by Deaf Lep-urd September 2, 2003

by Sexy Panda Bear October 8, 2010
