A special envelope used to present monetary gifts at occasions like weddings or births (often decorated with noshi or mizuhiki).
結婚式では祝儀袋に現金を入れて渡すのが一般的だ。
At weddings, it is common to put cash in a shūgibukuro and give it.
祝儀袋は袱紗（ふくさ）に包んで持参するのが正式なマナーだ。
The proper etiquette is to wrap the shūgibukuro in a fukusa and carry it.
赤ちゃんの出産祝いにかわいい柄の祝儀袋を買った。
I bought a cute patterned shūgibukuro for a baby gift.