- a covered opening in a ship's deck, through which cargo can be lowered or entrance made to a lower deck
- a similar opening in the floor or roof of a building
- A passage or opening leading to a hold, compartment, or cellar.
- A ladder or stairway within a hatchway.
- If you're installing your steps into an existing attic hatchway, you may have to expand the hole.
- Camera della cornpagna, the storeroom for provisions on board ship, is the use of "companion" for the framed windows over a hatchway on the deck of a ship, and also for the hooded entrance-stairs to the captain's cabin.