A code word is a term used to refer to something without using its actual name. ALFA is a four letter word that is often used in military operations as an abbreviation for 'Alpha'. GENETIC is a seven letter word that refers to the study of heredity and the variation of inherited characteristics. ZIP is a three letter word that is used to refer to a postal code. DIT and DAH are both three letter words that are used in Morse code. AREA is a four letter word that is used to refer to a particular geographical region. CODENAME is an eight letter word that is used to refer to a secret or classified name given to a project or operation. WATCHWORD is a nine letter word that is used to refer to a phrase or slogan that is used to identify a group or organization.