society > travel > travel by water > vessel, ship, or boat > parts of vessels > other parts of body of vessel > [noun] > opening in deck > vertical aperture > shaft passing through decks (2)
Nautical. A watertight shaft passing through the decks of a vessel, for loading, coaling, etc.
a shaft through which the ashes are shot, or are raised from the stokehold to the deck of a ship.