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Possible definitions for yays

yaws
Contagious tropical disease, caused by spirochetes indistinguishable from those of syphilis, which may be a subspecies. Yaws spreads mainly by discharge from skin sores, not sexual activity. It is common in children, who usually become immune. In the first stage, a skin sore starts as a wartlike thickening, cracks open, leaks fluid, and bleeds easily. A month or more later, multiple sores erupt. The third stage (much rarer than in syphilis) involves destruction of skin, mucous membranes, and bones. Penicillin cures early-stage yaws. Prevention requires isolation and prompt treatment, and personal and group hygiene.


Bakst
Russian painter and stage designer. He attended the Imperial Academy of Arts at St. Petersburg and studied in Paris. In 1898 he cofounded the journal Mir Iskusstva ("World of Art") with S. Diaghilev. He began designing scenery for the imperial theaters in 1900. In Paris he designed sets and costumes for Diaghilev's new Ballets Russes. His bold designs and sumptuous colors, conveying an exotic orientalism, won him international fame. His work played a major role in the impact of the Ballet Russes, revolutionized European stage design, and strongly influenced European high fashion.


balsa
Tree (Ochroma pyramidale, or O. lagopus) of the bombax family (Bombacaceae), native to tropical S. America and noted for its extremely light wood, which resembles clear white pine or basswood. Because of its buoyancy (about twice that of cork), balsa is well adapted for making floats for lifelines and life preservers. Its resiliency makes it an excellent shock-absorbing packing material. Its insulating properties make it a good lining material for incubators, refrigerators, and cold-storage rooms. Because it combines lightness and high insulating power, it is a valuable construction material for transportation containers for solidified carbon dioxide. It is also used in the construction of airplane passenger compartments and in model airplanes and boats.


balsam
Aromatic resinous substance that flows from a plant, either spontaneously or from an incision, and is used chiefly in medicinal preparations. Some of the more aromatic varieties are used in incense. Balsam of Peru, a fragrant, thick, deep brown or black fluid used in perfumes, is a true balsam, from a lofty leguminous tree, Myroxylon pereirae, native to and introduced into Sri Lanka. Balsam of Tolu (Colombia) is used in perfumes and in cough syrups and lozenges; it hardens with age. Canada balsam and Mecca balsam are not true balsams.


bass
Lowest musical voice or register. In vocal music, its range is approximately from the second E below middle C to middle C itself. A basso profundo emphasizes a lower register, a basso cantante a somewhat higher one. Outside of Russia, the solo bass voice has generally been relegated to certain standard operatic character roles. The lowest-pitched member of ...

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