تعريف blind carbon copy في الإنجليزية الإنجليزية القاموس.
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
{i} copy of a document or letter given to a third party without the primary receiver's knowledge, copy of a document or letter given to a third party the original of which bears no proof that the copy was given or sent to a third party