An instruction, order, or directive given to someone; also a request to tell or pass on something. (Often used as a noun for a command or instruction.)
上司の言いつけに従って資料を作成した。
I prepared the documents according to my boss's instructions.
母の言いつけを守って、夜９時までには帰った。
I obeyed my mother's instruction and returned by 9 p.m.
彼女は先生からの言いつけを生徒に伝えた。
She passed the teacher's instructions on to the students.