A bit of Sol's rash? (7)
I believe the answer is:
sunspot
'a bit' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'sol's rash?' is the wordplay.
'sol' becomes 'sun' (I've seen this in another clue).
'rash?' becomes 'spot' (I can't explain this - if you can you should give a lot more credence to this answer).
'sun'+'spot'='SUNSPOT'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for sunspot that I've seen before include "Dark cool patch on the surface of our nearest star" , "Solar surface blemish" , "Cool darker patch on our star" , "Solar cool patch" , "warm place" .)