Cat noise surrounds commotion in field (6)
I believe the answer is:
meadow
'field' is the definition.
(a meadow is a field)
'cat noise surrounds commotion' is the wordplay.
'cat noise' becomes 'mew' (I am not sure about this - if you are sure you should believe this answer much more).
'surrounds' is an insertion indicator.
'commotion' becomes 'ado' (ado is a kind of commotion).
'mew' placed around 'ado' is 'MEADOW'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for meadow that I've seen before include "Lea" , "A field of lush grass" , "it's green here" , "Low ground near river" , "Grassy field" .)