A triclinium is a formal dining room in a Roman building. The word is adopted from the Greek triklinion (τρικλίνιον)—from tri- (τρι-), "three", and klinē (κλίνη), a sort of couch, or rather chaise longue. Each couch was sized to accommodate a diner who reclined on their left side on cushions while some household slaves served multiple courses brought from the culina, or kitchen, and others entertained guests with music, song, or dance.

Pompeii was an ancient city in what is now the comune of Pompei near Naples in the Campania region of Italy. Along with Herculaneum, Stabiae, and many surrounding villas, the city was buried under 4 to 6 m of volcanic ash and pumice in the eruption of Mount Vesuvius in 79 AD.