Definitions
1.NounA vertical partition dividing the hull into separate compartments; often made watertight to prevent excessive flooding if the ship's hull is breached.
2.NounA similar partition in an aircraft or spacecraft, or some rail vehicles.
3.NounA partition or panel through which connectors pass, or a connector designed to pass through a partition.
4.NounA pressure-resistant sealed barrier to any fluid in a large structure.
5.NounA retaining wall along a waterfront.
6.NounA cellar hatchway.