BULKHEAD

- 2 dictionary results

bulk⋅head

[buhlk-hed]

–noun

1.	Nautical. any of various wall-like constructions inside a vessel, as for forming watertight compartments, subdividing space, or strengthening the structure.

2.	Aeronautics. a transverse partition or reinforcing frame in the body of an airplane.

Civil Engineering.

a.	a partition built in a subterranean passage to prevent the passage of air, water, or mud.

b.	a retaining structure of timber, steel, or reinforced concrete, used for shore protection and in harbor works.

Building Trades.

a.	a horizontal or inclined outside door over a stairway leading to a cellar.

b.	a boxlike structure, as on a roof, covering a stairwell or other opening.

Origin:
1490–1500; bulk ² + head

Related forms:

bulkheaded, adjective

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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bulk·head (bŭlk'hěd')

1. One of the upright partitions dividing a ship into compartments and serving to add structural rigidity and to prevent the spread of leakage or fire.
2. A partition or wall serving a similar purpose in a vehicle, such as an aircraft or spacecraft.
A wall or an embankment, as in a mine or along a waterfront, that acts as a protective barrier.
Chiefly New England A horizontal or sloping structure providing access to a cellar stairway.

[bulk, stall, partition (perhaps of Scandinavian origin) + head.]

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