War not finished, the Maori, angry, drank (7)
I believe the answer is:
'drank' is the definition.
Although both the answer and definition are past participle verbs, I don't see how one could define the other.
'war not finished the maori angry' is the wordplay.
'not finished' means to remove the last letter.
'the maori' becomes 'te' (I've seen this in other clues).
'angry' becomes 'red' (someone may go red when angry).
'war' with its last letter removed is 'wa'.
Can you help me to learn more?