Crossword Genius

Announced reason for which author Jules sees dragon (6)

Ross

I believe the answer is:

wyvern

I'm a little stuck... Click here to teach me more about this clue!

'dragon' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for wyvern that I've seen before include "Fabulous creature" , "Heraldic winged monster" , "Heraldic beast" , "Heraldic dragon with two legs and two wings" , "Winged two-legged dragon (heraldry)" .)

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