ground floor noun 2ground-floor adjective 1forms 2 noun2 •(UK, Australia) The floor of a building closest to ground level.The rite of the certification of death and placement in the coffin took place on Monday evening at 8:00 PM in the chapel on the ground floor of the late Pope's residence in the Casa Santa Marta. — 2025 •(informal, figurative) The initial stage of a project.We are the exclusive marketing agents for three excellent condominium developments which can get you in on the ground floor of a truly fine winter/summer resort experience. — 1981 ground-floor adjective1 •Situated on the ground floor. formsground floors · ground-floors
