The term BATMAN SOUND can be broken down into two crossword solutions: BAM (3 letters) and MAN (3 letters). BAM is a sound effect used in comic books, movies, and television shows to indicate an impact or explosion. It is often associated with the superhero Batman, who uses it to signify his arrival. MAN is a word used to refer to an adult male human being. In the context of Batman, it is used to refer to Bruce Wayne, the alter ego of the superhero.