Well this is rich! (6)
I believe the answer is:
heeled
'well' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives can occasionally define each other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for heeled that I've seen before include "Leant over" , "Played the part of a hooker" , "Be well shod thus to have money" , "Tilted; shod" , "Most shoes are" .)