noun
small decorative envelope for gift money; pochi-bukuro
A small paper envelope, often with cute or festive designs, used to give money as a gift, especially otoshidama (New Year's money for children) or small congratulatory tips. The name comes from the Kansai dialect word ぽち (a small tip or gift).
See also: お年玉
お年玉はポチ袋に入れて渡すのが一般的です。
It is common to put otoshidama in a pochi-bukuro when giving it.
かわいいポチ袋を文房具店
I bought cute pochi-bukuro at a stationery store.
From ぽち (a Kansai dialect word for a small tip or gift) + 袋 (bag, envelope). The exact origin of ぽち is uncertain, but it may be related to the idea of 'a little bit' or a small dot (点).