Penthouse/ˈpenthaʊs/ Definition 1 of 3Pro Tip 1/3Exclusivity Suggested Implies luxury and exclusivity, not just location. Celebrities often opt for a penthouse for the privacy and premium features. Pro Tip 2/3Top-Floor Prestige Indicates a prestigious living space, higher than surrounding buildings. The penthouse had an unparalleled view of the city skyline. Pro Tip 3/3Not Always Literal 'Penthouse' can be metaphorical for any top-tier product or service. The spa's penthouse package includes exclusive treatments.