Region in which to practise matricide? (6)
I believe the answer is:
domain
'region' is the definition.
(I know that domain is a type of region)
'to practise matricide?' is the wordplay.
'to practise' becomes 'do' (synonyms).
'matricide?' becomes 'main' (I am not sure about this - if you are sure you should believe this answer much more).
'do'+'main'='DOMAIN'
'in which' is the link.
Can you help me to learn more?
(Other definitions for domain that I've seen before include "Territory over which rule or control is exercised" , "Scope of knowledge - owned land" , "estate" , "Area under someone's control, field of activity" , "Realm or range of influence" .)