quarterdeck
 oxford
 views  updated May 18 2018quar·ter·deck  / ˈkwôrtərˌdek/ • n. the part of a ship's upper deck near the stern, traditionally reserved for officers. ∎  the officers of a ship or the navy.
 The Oxford Pocket Dictionary of Current English 
   quarterdeck
 oxford
 views  updated May 11 2018quarterdeck the part of a ship's upper deck near the stern, traditionally reserved for officers. The term was originally (in the early 17th century) used for a smaller deck situated above the 
half-deck, covering about a quarter of the vessel.
  The Oxford Dictionary of Phrase and Fable ELIZABETH KNOWLES