A growing involvement with Proust (6)
I believe the answer is:
sprout
'a growing involvement' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'proust' is the wordplay.
'proust' can be anagrammed to 'SPROUT'.
But, I'm unsure how this is indicated.
'with' is the link.
Can you help me to learn more?
(Other definitions for sprout that I've seen before include "Put out shoots for the vegetable" , "Small cabbage from Brussels?" , "Put out shoots for a brassica" , "Bud; a type of cabbage" , "Produce new growth" .)