a sedimentary rock formed from clay deposits
consistent in performance or behavior
a lump or mass of hard consolidated mineral matter
material consisting of the aggregate of minerals like those making up the Earth's crust
a genre of popular music originating in the 1950s; a blend of black rhythm-and-blues with white country-and-western
(figurative) someone who is strong and stable and dependable
United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984)
