Belly
Abdomen, Stomach
noun
The kanji and the word are exactly the same. That means they share meanings as well.
お腹 is the common everyday word for your belly, abdomen, or stomach. It's common to see this word written in kanji, but you'll also see it written in hiragana, especially in casual contexts.
The reading is an exception, but it isn't too hard to remember. Your belly contains all your insides, so it makes sense that it would have the same reading as the word for "inside" — 中 (なか)!
朝から、ちょっとお腹が痛いんです。
I've had a bit of a stomachache since this morning.
四十代になってお腹がぽっこり出てきた。
In my forties, I've started to get a potbelly.
今日はおいしいものをお腹いっぱい食べたから、また明日から仕事がんばれそうだよ。
Since I ate my fill of delicious food today, I feel like I can work hard again at my job starting tomorrow.
「お夕飯の支度ができましたよ！いらっしゃい。」「ああ、よかった！お腹ペコペコだよ。」
"Supper is ready! Come and get it." "Oh, perfect! I'm starving!"