dreamboat UK /ˈdɹiːmbəʊt/US /ˈdɹimˌboʊt/ noun2 •(informal, old-fashioned) An exceptionally good-looking and sexually attractive person, particularly a man.My new fella is such a dreamboat. He can dance, can sing, and is the captain of the school hockey team. •(slang, no longer used) Anything considered highly desirable for its kind, especially a car.My new car is a dreamboat. formsdreamboats