Crossword Genius

Project about cutting a group of trees (8)

Ross

I believe the answer is:

forecast

I'm a little stuck... Click here to teach me more about this clue!

'project' is the definition.
(thesaurus)

'about cutting a group of trees' is the wordplay.
I cannot quite understand how this works, but
'about' could be 're' (regarding) and 're' is found in the answer.
'a' is found in the answer.
'of' could be 'o' and 'o' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for forecast that I've seen before include "Tell in advance what will happen" , "Fear Scot in prediction" , "Divine" , "Prophesy" , "Predict (event)" .)

I've seen this clue in The Hindu.
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