roof·top 
/ˈru:fˌtɑ:p/ noun
plural roof·tops /ˈru:fˌtɑ:p/ noun [count] : the upper surface of a roof
▪ They have a garden on the rooftop of the apartment building. ▪ He wanted to shout from the rooftops when he got the job. — often used before another noun ▪ a rooftop television antenna ▪ a rooftop garden
▪ They have a garden on the rooftop of the apartment building. ▪ He wanted to shout from the rooftops when he got the job. — often used before another noun ▪ a rooftop television antenna ▪ a rooftop garden
