What does "quartermaster" mean?

Quartermaster: (Naut.) A petty officer who attends to the helm, binnacle, signals, and the like, under the direction of the master. Totten. Quartermaster general (Mil.), in the United States a staff officer, who has the rank of brigadier general and is the chief officer in the quartermaster's department; in England, an officer of high rank stationed at the War Office having similar duties; also, a staff officer, usually a general officer, accompanying each complete army in the field. -- Quartermaster sergeant. See Sergeant.