Dean Martin, born Dino Paul Crocetti, was an American singer, actor, and comedian. Martin is often referred to as "The King of Cool," a nickname that was fitting of his suave, laid-back demeanor. Other synonyms for Dean Martin include "Rat Pack member," as he was part of the iconic group of entertainers that included Frank Sinatra and Sammy Davis Jr. He was also known as a "crooner," due to his smooth, melodic voice that he exhibited in hits like "That's Amore" and "Ain't That a Kick in the Head." Additionally, he was sometimes called a "legend" or an "icon" for his lasting impact on American entertainment.