bulkhead

[buhlk-hed]

noun

Nautical. any of various wall-like constructions inside a vessel, as for forming watertight compartments, subdividing space, or strengthening the structure.
Aeronautics. a transverse partition or reinforcing frame in the body of an airplane.
Civil Engineering.
  1. a partition built in a subterranean passage to prevent the passage of air, water, or mud.
  2. a retaining structure of timber, steel, or reinforced concrete, used for shore protection and in harbor works.
Building Trades.
  1. a horizontal or inclined outside door over a stairway leading to a cellar.
  2. a boxlike structure, as on a roof, covering a stairwell or other opening.

Nearby words

  1. bulk mail,
  2. bulk modulus,
  3. bulk up,
  4. bulk-mail,
  5. bulker,
  6. bulkhead deck,
  7. bulkheading,
  8. bulking,
  9. bulky,
  10. bull

Origin of bulkhead

First recorded in 1490–1500; bulk2 + head

Related formsbulk·head·ed, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bulkhead


British Dictionary definitions for bulkhead

bulkhead

noun

any upright wall-like partition in a ship, aircraft, vehicle, etc
a wall or partition built to hold back earth, fire, water, etc

Word Origin for bulkhead

C15: probably from bulk projecting framework, from Old Norse bálkr partition + head

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for bulkhead

bulkhead

n.

late 15c., with head (n.); the first element perhaps from bulk "framework projecting in the front of a shop" (1580s), which is perhaps from Old Norse bolkr "beam, balk" (see balk (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper