codenumber

noun

UK /ˈkəʊdˌnʌmbə/

US /ˈkoʊdˌnʌmbər/

A codenumber is a special number used as a secret name for something.

The spy's codenumber was 007.

SYNONYMS

code number identifier designation reference number label

RELATED WORDS

code number password alias serial number

OTHER MEANINGS

2. A number that stands for a product or item in a catalog or system.

Each toy in the catalog has its own codenumber.

3. A numeric key used to unlock or access something.

She typed the codenumber to open the secret door.

4. A number assigned to a person or thing to keep their real identity hidden.

The contest judges used codenumbers instead of the players' names.