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2.
A singer back in the day that STILL is cool to this day. Almost everyone has heard his music. Also in the original Ocean's 11 with Sammy Davis Jr. and Frank Sinatra.
Person- "Dean Martin is my favorite singer!"
by SJM3 March 17, 2009
 
1.
Superlatively cooler than most in diction, manner, and in the ability to woo the opposite sex.

also see: Dino
The way he effortlessy coaxed those two hotties up to his pad with one sentence was so Dean Martin.
by loungecat August 09, 2004