forecastle -
Crew's quarters located at the forward part of a ship.
Wikipedia
Forecastle refers to the upper deck of a sailing ship forward of the foremast. The syncope of the word, fo'c'sle or fo'c's'le, is common among nautical terms due to the nature of their pronunciation during the age of sail by sailors with strong accents and varying language skills. Among defensive troops on battlefields forward of castle walls, the syncope perhaps led to the usage of the homophone foxhole.