n.
 a ceremonial chair for a sovereign, bishop, or similar figure. 
▸
(
the throne)
 the power or rank of a sovereign:
 the heir to the throne.
  ▸humorous a toilet.
v.
 literary place on a throne.
 
  Etymology
  ME: from OFr. trone, via L. from Gk thronos ‘elevated seat’.