In here, a container is typically green (7)
I believe the answer is:
herbage
'typically green' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'in here a container' is the wordplay.
'in' means one lot of letters goes inside another.
'a container' becomes 'bag' (bag is a kind of container).
'here' going around 'bag' is 'HERBAGE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for herbage that I've seen before include "Vegetation" , "Plant life" .)