n. [ From Berthier, a French naturalist. ] (Min.) A double sulphide of antimony and iron, of a dark steel-gray color. [ 1913 Webster ]
n. a World War I battle in northwestern France where the Allies defeated the Germans in 1918.
n.
n. One who makes wooden stringed instruments, such as violins, guitars, etc. [ RDH ]
A guitarmaking Web site can be found at: http://www.cybozone.com/luthier/