From Longman Dictionary of Contemporary Englishquarterdeckquar‧ter‧deck /ˈkwɔːtədek $ ˈkwɔːrtər-/ noun [countable] TTWthe back part of the upper level of a ship, which is used mainly by officers
Examples from the Corpus
quarterdeck• One saluted everyone and everything, even the quarterdeck, the moment one set foot on it.• Now she knew why sailors saluted the quarterdeck. 