'rooftop' definitions:

Definition of 'rooftop'

noun

The top of a (usually flat) roof

Synonyms of 'rooftop'

From: Moby Thesaurus

ceiling,
clerestory,
eaves,
housetop,
lantern,
overhead,
penthouse,
plafond,
ridgepole,
roof,
roof garden,
roof-deck,
roofage,
roofing,
roofpole,
rooftree,
shingles,
skylight,
slates,
surface,
tiles,
top,
top floor,
top side,
topside,
topsides,
upper side,
upside

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