blind carbon copy

Noun

 * 1)  A copy of an email message that is sent to a person (often one of many) other than the primary recipient without the express knowledge of the other recipients.

Translations

 * Armenian: ծածկապատճեն
 * Finnish: piilokopio
 * French:, copie cachée
 * Macedonian: скри́ена ко́пија
 * Polish: ukryta kopia, kopia ukryta, ukryte do wiadomości
 * Russian: скрытая копия

Verb

 * 1)  To send a blind carbon copy.