n. A means of passing through a wall or floor, having a hatch (especially on a ship); a doorway with a hatch rather than a door
the GNU version of the Collaborative International Dictionary of English
n. A square or oblong opening in a deck or floor, affording passage from one deck or story to another; the entrance to a cellar.
The Century Dictionary and Cyclopedia
n. A square or oblong opening in the deck of a ship, affording a passage from one deck to another, or into the hold or lower apartments. See hatch, n., 3.
n. The opening of any trapdoor, as in a floor, ceiling, or roof.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an entrance equipped with a hatch; especially a passageway between decks of a ship
Word Usage
""See if the hatchway is down, and show her where to put her clothes.""