deckhead
/ˈdɛkˌhed/Definitions
1. noun
The highest point or upper limit of something, especially a structure, such as the upper edge of a ship’s deck.
“The deckhead of the aircraft carrier was damaged during the storm.”
2. noun
A person in charge or a person at the top of an organization or hierarchy.
“The company’s new CEO was promoted from deckhead to executive director.”