n. 1 a platform in a ship serving as a floor. b the accommodation on a particular deck of a ship. 2 floor or compartment of a bus etc. 3 section for playing discs or tapes etc. in a sound system. 0 esp. US pack of cards. 5 slang ground. v. 1 (often foll. by out) decorate. 2 provide with or cover as a deck. o below deck(s) in or into the space below the main deck. [Dutch, = cover]