- One who protects; a guardian. (noun)
- A device that protects; a guard. (noun)
- A person who rules a kingdom during the minority of a sovereign. (noun)
- The head of the Commonwealth of England, Scotland, and Ireland from 1653 to 1659. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.