1.
marsupial pouch; brood pouch
The pouch on the abdomen of marsupials such as kangaroos and koalas, in which newborns continue to develop after birth. Also refers to the brood pouch of seahorses and similar animals.
A zoological term composed of 育児 (child-rearing) and 嚢 (sac, pouch). Most commonly associated with kangaroos and other marsupials, but also used for the brood pouch of seahorses and certain crustaceans.