a small bag, usually made of leather, and often carried in a pocket or attached to a belt 小袋子；荷包 a large bag for carrying letters, especially official ones 邮袋 a pocket of skin on the stomach of some female marsupial animals, such as kangaroos, in which they carry their young （有袋目动物腹部的）育儿袋 
a pocket of skin in the cheeks (= sides of the face below the eyes) of some animals, such as hamsters, in which they store food （某些动物贮存食物的）颊袋，喉囊 see also posing pouch
Word OriginMiddle English (as a noun): from Old Northern French pouche, variant of Old French poche ‘bag’.