rooftop
n.-
1 the top surface of a building (n.) A2 Elementarythe outside area on top of a building.
the external upper surface of a building, often used to describe a flat area accessible to people.
ExampleWe went up to the rooftop to watch the fireworks over the city.
ExampleThe luxury hotel features a rooftop terrace where guests can enjoy panoramic views of the skyline while dining.
UsageOften used as a modifier before another noun, such as 'rooftop bar' or 'rooftop garden'.
- basement
- ground floor
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2 roofing material (n.) B2 Upper Intermediate Technicalthe material that covers the top of a house.
the top layer or material composition of a roof structure.
ExampleThe heavy rain damaged the rooftop, and now the ceiling is leaking.
ExampleThe architect specified a sustainable rooftop material designed to reflect solar heat and reduce the building's cooling costs.
UsageUsually refers to the physical substance rather than the space.
Teacher's tipThis sense is less common in daily conversation and is mostly used in construction or architecture.