Definition of "half-deck" [half•-deck]

• That portion of the deck next below the spar deck which is between the mainmast and the cabin. (noun)
• A shell of the genus Crepidula; a boat shell. See boat shell. (noun)
• See Half deck, under Deck. (noun)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "Oh, August was no tyro in the field of building houses; he had both poured walls and built houses long years before, and he regarded this “half-deck” arrangement as anything but a practical solution to the problem at hand, for there would have to be a row of pillars to support it."
• "He suggested a three-foot concrete “half-deck” over the cellar along the entire rear wall which would lie outside the floor plan of the house and which could serve very well as a terrace."
• "The upper deck was similarly raised from the stern-post to the mainmast, forming a half-deck, under which the cabins were placed."