Definition of いっしゅくいっぱん
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(n) (being beholden to someone for a favor of) a night's lodging and a meal
彼からの思いがけないプレゼントが届いたよ。少々は一宿一飯の恩義でも感じてくれたのかな。
We got an unexpected present from him. I guess he felt a little obligated after what we did for him.