Fair description of Polly? (6)
I believe the answer is:
pretty
'fair' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for pretty that I've seen before include "Pleasing on the eye" , "like a kettle of fish" , "comely" , "Fair - fairly" , "Lovely" .)