English version

under plain cover/under separate cover

From Longman Dictionary of Contemporary Englishunder plain cover/under separate coverunder plain cover/under separate coverTCMif a letter etc is sent under plain cover or under separate cover, it is sent in a plain envelope or a separate envelope The bill will be sent to you later under separate cover. cover
Pictures of the day
Do you know what each of these is called?
Click on the pictures to check.
Word of the day consequently as a result