Rooftop (noun)

1. The top or upper surface of a roof.
2. An outdoor space or platform on the roof of a building, often used for recreation or as a garden.

Origin:

The word rooftop comes from the late 16th century, derived from the combination of 'roof' and 'top', referring to the top or upper surface of a roof.

Examples:

1. The rooftop was used as a sun deck by the residents of the building.
2. The view from the rooftop was breathtaking, with a panoramic view of the city.
3. The rooftop was the perfect place for a summer barbeque, with plenty of room for guests.
4. The rooftop garden was a peaceful oasis in the middle of the city.
5. The rooftop terrace was a popular spot for evening cocktails, with a stunning view of the sunset.