Troll ate one large wayward woman (7)
I believe the answer is:
loretta
'woman' is the definition.
'troll ate one large wayward' is the wordplay.
I cannot really see how this works, but
'one' could be 'o' (I've seen this in other clues) and 'o' is found within the answer.
'large' could be 'l' (eg in clothes sizes) and 'l' is located in the answer.
The remaining letters 'retta' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for loretta that I've seen is " She".)