Dancing Maoris begin hacking all kangaroos about (4)
I believe the answer is:
haka
'dancing maoris' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'begin hacking all kangaroos about' is the wordplay.
'begin' indicates taking the first letters.
The initial letters of 'hacking all kangaroos about' is 'HAKA'.
Can you help me to learn more?
(Other definitions for haka that I've seen before include "Maori ceremonial war-dance" , "routine before start of match" , "Maori ceremonial war dance" , "Aggressive Kiwi dance before a rugby match" , "Maori war dance used by All Blacks" .)