Definitions of throne:

• noun:   the position and power of one who occupies a throne
• noun:   the chair of state of a monarch, bishop, etc.

  Example: "The king sat on his throne"

• noun:   a plumbing fixture for defecation and urination
• verb:   sit on the throne as a ruler
• verb:   put a monarch on the throne

  Example: "The Queen was enthroned more than 50 years ago"

• name:  A surname (very rare: popularity rank in the U.S.: #27009)