The most common and most likely answer to this crossword clue is the 6 letter word WOMBAT
I've seen this crossword clue in The Times
W
O
M
B
A
T
More clues leading to the result WOMBAT
- Burrowing marsupial initially waiting for start of fight
- Short female taking time to catch black marsupial
- 2 with special place for carrying a 2Mb floppy
- Aussie animal‘s wife fights without limits
- Marsupial getting flap cut from behind
- Located in supporting place to carry young marsupial
- Animal label cut up
- Cut back one mammal or another
- Graduate wearing pullover’s a native Australian
- Key cut back for Australian inhabitant
Buddy explains!

The straight part
We know that "Burrowing marsupial" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case burrowing marsupial = wombat.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does WOMBAT mean?
WOMBAT noun- Any of several herbivorous, burrowing marsupials, of the family Vombatidae, mainly found in southern and eastern Australia.