BULKHEAD

n. waterproof partitions in a ship

Bulkhead may refer to the following:Bulkhead (partition), a wall within the hull of a ship, vehicle, or containerBulkhead (barrier)Bulkhead lineBulkhead (Transformers) - A fictional characters from the Transformers universes.See also: Flatcar Bulkhead
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Noun
1. a partition that divides a ship or plane into compartments
(hypernym) partition, divider
(part-holonym) ship

(n.)
A structure of wood or stone, to resist the pressure of earth or water; a partition wall or structure, as in a mine; the limiting wall along a water front.
  

(n.)
A partition in a vessel, to separate apartments on the same deck.
  

A partition separating one part of a ship, freight car, aircraft or truck from another part. (MARAD2)