pro·tec·tor /prəˈtɛktɚ/
  保護者,保護物,保護裝置
  Pro·tect·or n.
  1. One who, or that which, defends or shields from injury, evil, oppression, etc.; a defender; a guardian; a patron.
     For the world's protector shall be known.   --Waller.
  2. Eng. Hist. One having the care of the kingdom during the king's minority; a regent.
     Is it concluded he shall be protector !   --Shak.
  3. R. C. Ch. A cardinal, from one of the more considerable Roman Catholic nations, who looks after the interests of his people at Rome; also, a cardinal who has the same relation to a college, religious order, etc.
  Lord Protector Eng. Hist., the title of Oliver Cromwell as supreme governor of the British Commonwealth (1653-1658).
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  protector
       n : a person who cares for persons or property [syn: defender,
            guardian, shielder]