Enveloppe.
1. Fire that makes it difficult for the enemy to fire on one's own individuals or formations; SYN. covering fire.
2. The act of concealing the existence of something by obstructing the view of it; SYN. covering, screening, masking.
1. A large cloth used to cover furniture that is not in use for a long period; SYN. dust sheet.
2. A removable plastic cover to protect a piece of equipment.