code name noun
plural ∼ names [count] : a name that is used to keep someone's or something's real name a secret
▪ Every secret agent has a code name.
▪ Every secret agent has a code name.
— code–name 
/ˈkoʊdˌneɪm/ verb, code–names; code–named; code–nam·ing [+ obj]
▪ The military operation is code-named “Clean Sweep.”
/ˈkoʊdˌneɪm/ verb, code–names; code–named; code–nam·ing [+ obj] ▪ The military operation is code-named “Clean Sweep.”
