English definition of “cover”
BOOK [C] › the outer part of a book, magazine, etc, that protects the pages: Her picture was on the cover of 'Vogue' magazine.
PROTECTION [C] › something you put over something else, usually to protect it: an ironing board cover a lens cover
FINANCIAL [U] › financial protection so that you get money if something bad happens: The policy provides £50,000 accidental damage cover.
FROM WEATHER/ATTACK [U] › protection from bad weather or an attack: They took cover under some trees until the rain stopped.
FOR ILLEGAL ACTIVITY [C] › something used to hide a secret or illegal activity: The club is used as a cover for a gang of car thieves.