From Longman Dictionary of Contemporary Englishbulkheadbulk‧head /ˈbʌlkhed/ noun [countable] TTATTWa wall that divides the structure of a ship or aircraft into separate parts
Examples from the Corpus
bulkhead• There were the usual bevelled panels on the lower part of the doors and bulkheads.• It is possible to remove the interior bulkhead but it supports the sides of the body and its removal weakens the structure.• The internal bulkheads were lined with equipment and storage compartments.• The remains of the air filter system was fitted facing the rear bulkhead.• I have a hollow-core door in my foundation at the bottom of the bulkhead.• Is it feasible to remove the bulkhead behind the foot seats?• There is no modification needed to the bulkhead.• The bulkhead footwells are quite bad, is it practical to fit a new bulkhead bearing in mind the V8 conversion?Origin bulkhead (1400-1500) bulk “part that sticks out from a building” ((15-19 centuries)) (perhaps from Old Norse balkr “partition”) + head 