noun
General word for a flexible container made of paper, cloth, plastic, etc.
買い物袋を持ってきてください。
Please bring a shopping bag.
お菓子の袋を開ける
I open the bag of snacks.
noun
dead end; blind alley
Used for a street or path that has no exit; often in the phrase 袋小路 (ふくろこうじ).
この道は袋になっている。
This road is a dead end.
noun
plot of land surrounded by water
Rare geographical use; refers to a piece of land enclosed by water, similar to an island but often smaller or less prominent.
川に囲まれた袋のような土地。
A plot of land surrounded by water like a sack.