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Bull Run
Bull Run small stream, NE Va., c.30 mi (50 km) SW of Washington, D.C. Two important battles of the Civil War were fought there: the first on July 21, 1861, and the second Aug. 29-30, 1862. Both battlefields are included in Manassas National Battlefield Park (est. 1940).
First Battle of Bull R...
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Pinar del Rio
Pinar del Rio city (1994 est. pop. 118,000), capital of Pinar del Rio prov., W Cuba. It is linked by rail and highway to Havana and is the center of a road network running through the province. The city, founded in 1699, is famous for the tobacco grown in the Vuelta Abajo district. Near the city ...
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Amtrak
Amtrak the National Railroad Passenger Corp., authorized to operate virtually all intercity passenger railroad routes in the United States. Amtrak was created by Congress in 1970 in response to more than two decades of continuous operating deficits by privately run passenger railroads; over 100 of ...
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triathlon
triathlon athletic event made up of three contests. Since the 1970s the term has come to mean especially a race combining swimming, bicycling, and running. A notable example is Hawaii's Ironman Triathlon, held since 1978, which features a 2.5-mi (4-km) swim, a 112-mi (180-km) bicycle race, and a 26...
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-drome
-drome
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comb. form
1.
denoting a place for running or racing:
velodrome.
2.
denoting something that runs or proceeds in a certain way:
palindrome.
...
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Simpson Desert
Simpson Desert c.50,000 sq mi (130,000 sq km), barren region of central Australia, predominantly in the southeastern portion of the Northern Territory, extending S into Queensland and E into South Australia. Long, parallel sand dunes, up to 150 ft (46 m) high and 1,500 ft (457 m) apart, run for mil...
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Guangxi Zhuang Autonomous Region
Guangxi Zhuang Autonomous Region , province (1994 est. pop. 44,550,000), c.85,000 sq mi (220,150 sq km), S China, bordering on Vietnam. The capital is Nanning . Guangxi is drained by the navigable Xi River and its many tributaries. It is in the double-crop agricultural belt, but because of the hill...
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moraine
moraine , a formation composed of unsorted and unbedded rock and soil debris called till, which was deposited by a glacier . The till that falls on the sides of a valley glacier from the bounding cliffs makes up lateral moraines, running parallel to the valley sides. When two or more valley glacier...
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leatherback
leatherback marine turtle, Dermochelys coriacea, found in tropical, subtropical, and temperate waters around the world. The largest of all turtles, it may reach a length of 7 1/2 ft (230 cm) and weigh 1200 lb (540 kg). Its shell, unlike that of most turtles, has no horny layer; the bone layer ...
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arm
arm upper limb in humans. Three long bones form the framework of the arm: the humerus of the upper arm, and the radius (outer bone) and ulna (inner bone) of the forearm. The radius and ulna run parallel but meet at their ends in such a manner that the radius can rotate around the ulna. This arrange...
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