Definitions
1.nounA horizontal door in a floor or ceiling.
2.nounA trapdoor.
3.nounAn opening in a wall at window height for the purpose of serving food or other items. A pass through."The cook passed the dishes through the serving hatch."
4.nounA small door in large mechanical structures and vehicles such as aircraft and spacecraft often provided for access for maintenance.
5.nounAn opening through the deck of a ship or submarine
6.nounA gullet.
7.nounA frame or weir in a river, for catching fish.
8.nounA floodgate; a sluice gate.
9.nounA bedstead.
10.nounAn opening into, or in search of, a mine.
11.verbTo close with a hatch or hatches.