Always go for this type of growth (9)
I believe the answer is:
evergreen
'this type of growth' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'always go' is the wordplay.
'always' becomes 'ever' (synonyms).
'go' becomes 'green' (I can't justify this - if you can you should believe this answer much more).
'ever'+'green'='EVERGREEN'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for evergreen that I've seen before include "Always popular" , "Ivy, perhaps" , "Holly, say" , "Having enduring popularity" , "always retaining popularity" .)