Bulkhead (noun)

1. A partition or wall, especially one that separates different compartments in a ship or aircraft.
2. A retaining wall used for supporting earth.

Origin:

From the middle english word 'bulkehede' meaning 'partition'.

Examples:

1. The bulkhead separated the cargo hold from the passenger cabin in the ship.
2. The aircraft had to be evacuated after a fire broke out in the bathroom behind the bulkhead.
3. The bulkhead was built to prevent soil erosion and protect the nearby buildings.
4. The bulkhead was decorated with a mural to make the waiting room more attractive.
5. The bulkhead provided a barrier to protect the crew from the intense heat of the engine.