1. blind carbon copy - Noun
2. blind carbon copy - Verb
blind carbon copy (plural blind carbon copies)
(Internet) 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.
blind carbon copy (third-person singular simple present blind carbon copies, present participle blind carbon copying, simple past and past participle blind carbon copied)
To send a blind carbon copy