To place someone on a throne or to invest them with royal authority; to put someone in a position of honor or power.
From 'en-' (cause to be) plus 'throne' (from Greek thronos meaning seat). Entered English around the 14th century with meaning of installing a monarch.
When kings and queens are crowned, they're also 'enthroned,' which literally means placed on their throne—but the word has become so formal and ceremonial that it now applies to anyone being put in a position of great honor or authority.
Complete word intelligence in one call. Free tier — 50 lookups/day.