BULKHEAD
bulkhead
(noun) a partition that divides a ship or plane into compartments
Source: WordNet® 3.1
Etymology
Noun
bulkhead (plural bulkheads)
(nautical) A vertical partition dividing the hull into separate compartments; often made watertight to prevent excessive flooding if the ship's hull is breached.
A similar partition in an aircraft or spacecraft.
Mechanically, a partition or panel through which connectors pass, or a connector designed to pass through a partition.
A pressure-resistant sealed barrier to any fluid in a large structure.
A retaining wall along a waterfront.
Source: Wiktionary
Bulk"head`, n. Etym: [See Bulk part of a building.]
1. (Naut.)
Definition: A partition in a vessel, to separate apartments on the same
deck.
2. 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. Bulked line, a line beyond which a wharf must
not project; -- usually, the harbor line.
Source: Webster’s Unabridged Dictionary 1913 Edition