One's Wish
Prayer, Wish
noun
You know that お願い means "a request," and 事 can mean "thing." Well, a request for some specific thing can also be called one's wish or a prayer. Do you have any 願い事 in your heart right now? Of course you do! Don't worry, you can tell me.
The readings come from the words お願い and 事. If you know how to read those you should be able to read this word too. Just remember that 事 is rendaku'd, so it's read as ごと.
彼女は、一番星に願い事をしました。
She made a wish on the first star.
こちらの神社の神様は、願い事を聞いてくださることで有名です。
The deity of this shrine is famous for listening to wishes.
男は願い事を心に思いながら、手を合わせて祈りました。
The man put his hands together in prayer with his wish in mind.