She's very tall - a fabulous woman! (6)
I believe the answer is:
ogress
'woman' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for ogress that I've seen before include "Formidable woman" , "Terror" , "Female man-eating giant" , "Harridan" , "Female giant of fairy tales" .)