mail slot noun

Mail Slots what is a mail slot USPS regulations state that mail slots or letter slot mailboxes must have at least 1 ½” x 7” openings for mail delivery and be installed at what is a progressive slot Deltana online catalog for Mail Slot & Sleeves

what slot games pay real cash A usually horizontal slot in a door through which mail can be delivered It often has a hinged cover to keep the opening cloised when not in use