curtain-lecture
n. a reproof given by a wife to her husband in bed

That’s from Samuel Johnson’s 1755 Dictionary of the English Language, which is more colorful than one might suppose. It also defines cough as “a convulsion of the lungs, vellicated by some sharp serosity” and lexicographer as “a writer of dictionaries, a harmless drudge, that busies himself in tracing the original and detailing the signification of words.”