This was a large, fierce reptile, like a lizard. For Jewish people, it was a symbol of evil and chaos. The dragon is also identified as "the devil or Satan." See how you translated this in [Revelation 12:3](../12/03.md). (See: [[rc://en/ta/man/jit/writing-symlanguage]])
The word "throne" here refers to the dragon's authority to rule as king. Alternate translation: "his royal authority" or "his authority to rule as king" (See: [[rc://en/ta/man/jit/figs-metonymy]])