D defs.my
Entry 2 senses Webster, 1913

Half-deck

/(-dĕk`)/ · Half·-deck · IPA
01 n. A shell of the genus Crepidula; a boat shell. See Boat shell.
  1. 1.
    A shell of the genus Crepidula; a boat shell. See Boat shell.(Zool.) See: Boat shell
  2. 2.
    See Half deck, under Deck. See: Deck