Fantasist of dismal aspect touring Maine (7)
I believe the answer is:
dreamer
'fantasist' is the definition.
(I've seen this before)
'dismal aspect touring maine' is the wordplay.
I cannot really see how this works, but
'maine' could be 'me' (abbreviation) and 'me' is found in the answer.
'dismal' could be 'drear' (I've seen this before) and 'drear' is located in the remaining letters.
No letters remain.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for dreamer that I've seen before include "Idealist - visionary" , "Fantasist" , "such an unpractical person!" , "He has visions" , "Mitty type" .)