Flatulence
Gas, Fart
noun
The kanji and the word are exactly the same. That means they share meanings as well.
You already learned this reading with the kanji, so you should be good to go!
あなたは屁の話をしていると思っているんですが、合ってますかね。
I'm assuming you are talking about flatulence, am I correct?
私は豚肉を食べると屁がたくさん出ます。
If I eat pork, I fart a lot.
それらの屁はまあ満足のいくものだったね。
Those farts were pretty satisfying.