What does "retired" mean?

Retired: Withdrawn from active duty or business; as, a retired officer; a retired physician. Retired flank (Fort.), a flank bent inward toward the rear of the work. -- Retired list (Mil. & Naval), a list of officers, who, by reason of advanced age or other disability, are relieved from active service, but still receive a specified amount of pay from the government. -- Re*tired"ly, adv. -- Re*tired"ness, n.