To listen again or listen repeatedly (e.g. replaying a recording or reviewing something heard before).
昨日の講義を録音で聞き返して、重要な部分をメモした。
I listened to yesterday's lecture again from the recording and took notes of the important parts.
ラジオのニュースを後で聞き返したら、間違いが見つかった。
When I listened to the radio news again later, I found a mistake.
その曲はメロディーが印象的で、何度も聞き返したくなる。
That song's melody is striking and makes you want to listen to it repeatedly.
To ask a question in return — to reply to someone's remark by asking a question back.
彼女が「明日来られる？」と聞くと、彼は「何時に来るんだ？」と聞き返した。
When she asked, "Can you come tomorrow?", he asked back, "What time will you come?"
上司の質問に対して彼はすぐに「なぜですか」と聞き返した。
He immediately asked back, "Why?", in response to his boss's question.
話の途中でわからない言葉が出てきたので、彼女は『それってどういう意味？』と聞き返した。
A word she didn't understand came up in the middle of the conversation, so she asked, "What does that mean?"
To ask again or request a repeated explanation when something wasn't heard or understood.
大事な点が分からなかったので、先生に聞き返して詳しく説明してもらった。
Because I didn't understand an important point, I asked the teacher to repeat it and explain in detail.
電車の走行音で聞き取れなかったため、もう一度聞き返した。
I couldn't hear because of the noise from the train, so I asked them to repeat it.
会議でわからない点があれば遠慮せずに聞き返すべきだ。
If there is anything you don't understand in a meeting, you should not hesitate to ask for clarification.