The word "cracksmen" is a colloquial term used to refer to burglars or thieves who specialize in breaking into safes or vaults. Synonyms for cracksmen include safe-crackers, safe-breakers, safecrackers, burglars, robbers, thieves, and break-in artists. These words are often used interchangeably to describe individuals who are skilled at gaining unauthorized access to secured buildings and spaces. The term "cracksmen" is somewhat dated and is typically associated with classic heist movies and crime novels. Nonetheless, the word remains in use today as a colorful descriptor for those who engage in high-stakes, illegal activities.