Prophecy about wood is going round (8)
I believe the answer is:
forecast
'prophecy' is the definition.
(I've seen this before)
'about wood is going round' is the wordplay.
I cannot really see how this works, but
'about' could be 're' (common abbreviation for 'with reference to') and 're' is located in the answer.
'round' could be 'o' (round can mean a round object) and 'o' is found in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for forecast that I've seen before include "Fear Scot in prediction" , "Predict as with weather" , "Predict (event)" , "Prediction, about the weather perhaps" , "Divine" .)