What is another word for kangaroo pouch?

There isn't really another word for "kangaroo pouch" that is as widely used and understood. However, you could use some more descriptive phrases:

* Marsupial pouch - This is a more general term that applies to any pouch found on a marsupial animal.

* Abdominal pouch - This emphasizes the location of the pouch on the animal's body.

* Breeding pouch - This highlights the pouch's role in nurturing young.

Ultimately, the best alternative depends on the context and what you're trying to emphasize.