In which to foster timber production? (6)
I believe the answer is:
forest
'in which' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'foster timber production?' is the wordplay.
'foster' anagrams to 'FOREST'.
But, I am not sure how this is indicated.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for forest that I've seen before include "eg Sherwood" , "See 15" , "large area covered with trees" , "Large densely wooded area" , "Dense woodland" .)