godan verb (-ru), intransitive verb
listen attentively; be absorbed in listening
Describes a state of being deeply engrossed in listening, often to music, a story, or a speaker. The focus is on the listener's absorption rather than the act of hearing.
彼女の話に聞き入って、時間が経つのを忘れた。
I was so absorbed in listening to her story that I lost track of time.
美しいピアノの音色に聴き入る。
I listen intently to the beautiful tone of the piano.