1A colloquial term for the stomach (the organ) used frequently in everyday speech.
昨夜から胃袋が重くて、今日はあまり食べられない。
My stomach has felt heavy since last night, so I can't eat much today.
子どもは胃袋が小さいから、少量を頻繁に食べるほうがいい。
Children have small stomachs, so it's better for them to eat small amounts frequently.
あの店はボリュームがあるから、胃袋を満たしてくれる。
That restaurant serves hearty portions that fill your stomach.
2Appetite or dietary needs — the amount one eats or one's appetite; also used figuratively (e.g., 'win someone's stomach' meaning to win someone over with food).
旅先では地元の料理で胃袋を満たしたい。
When traveling, I want to satisfy my appetite with local dishes.
家庭の経済を支えるには家族の胃袋を考えた買い物が必要だ。
To support the household finances, you need to shop considering the family's dietary needs.
あのシェフは、まず胃袋をつかむ料理を作ることで有名だ。
That chef is known for making dishes that first win over people's appetites.