Boulangerite
a bluish lead-gray mineral, lead antimony sulfide, Pb 5 Sb 4 S 11 , a minor ore of lead.
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- Boulangism
the doctrines of militarism and reprisals against Germany, advocated, especially in the 1880s, by the French general Boulanger. Historical Examples Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 7 Various
- Boulder
a detached and rounded or worn rock, especially a large one. a city in N Colorado. Contemporary Examples New Questions in JonBenet’s Murder Christine Pelisek October 3, 2010 The Call Never Came Michael D. Brown, Ted Schwarz August 27, 2010 New Clues in JonBenet Ramsey Murder Carol McKinley July 17, 2012 Channing Tatum and Jonah […]
- Boulder-canyon
a canyon of the Colorado River between Arizona and Nevada, above Boulder Dam.
- Boulder-clay
a glacial deposit consisting chiefly of unstratified clay with embedded boulders. Historical Examples Fragments of Earth Lore James Geikie The Cruise of the Betsey Hugh Miller Prehistoric Man W. L. H. Duckworth The Cruise of the Betsey Hugh Miller Fragments of Earth Lore James Geikie Hugh Miller William Keith Leask The Cruise of the Betsey […]
- Boulder-dam
a dam on the Colorado River, on the boundary between SE Nevada and NW Arizona. 726 feet (221 meters) high; 1244 feet (379 meters) long. noun the former name (1933–47) of Hoover Dam