an electric railway operating below the surface of the ground (usually in a city); "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
an uninhabited wilderness that is worthless for cultivation; "the barrens of central Africa"; "the trackless wastes of the desert"
incapable of sustaining life; "the dead and barren Moon"
not bearing offspring; "a barren woman"; "learned early in his marriage that he was sterile"
completely wanting or lacking; "writing barren of insight"; "young recruits destitute of experience"; "a novel devoid of wit and inventiveness"; "a life empty of happiness"; "innocent of literary merit"; "void of understanding"