bulkhead

[ 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.
3. 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.
4. 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.

bulkhead

/ ˈbʌlkˌhɛd /

noun

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

Other Words From

• bulkheaded adjective

Word History and Origins

Origin of bulkhead¹

First recorded in 1490–1500; bulk ² + head

Word History and Origins

Origin of bulkhead¹

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

Example Sentences

Let go from Spirit in April 2023, Dean had filed a complaint with the Department of Labor alleging that his termination was retaliation for drawing attention to the company's lax aviation safety measures, related to improperly drilled bulkhead holes.

From Salon

North Wildwood has asked the state for emergency permission to build a steel bulkhead along the most heavily eroded section of its beachfront — something previously done in two other spots.

From Seattle Times

But to the naked eye, they had the charm of a bulkhead door leading to a scary basement.

From New York Times

Repairs have included more than $3 million for rust and hull repairs, and $3.35 million for bulkhead repairs and removing lifeboats.

From Los Angeles Times

In September, misdrilled holes were discovered in the 737 MAX aft pressure bulkhead, the domed fuselage cap that seals the rear of the passenger cabin and is installed at Spirit.

From Seattle Times