John Rock
— Navneord
– Engelsk
～ United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984)
John Davison Rockefeller
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～ United States industrialist who made a fortune in the oil business and gave half of it away (1839-1937)
John D. Rockefeller
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～ United States industrialist who made a fortune in the oil business and gave half of it away (1839-1937)
Jacob's rod
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～ asphodel having erect smooth unbranched stem either flexuous or straight
John Roderigo Dos Passos
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～ United States novelist remembered for his portrayal of life in the United States (1896-1970)
Jean Louis Rodolphe Agassiz
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～ United States naturalist (born in Switzerland) who studied fossil fish; recognized geological evidence that ice ages had occurred in North America (1807-1873)
John Augustus Roebling
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～ United States engineer (born in Germany) who designed and began construction of the Brooklyn bridge (1806-1869)
John Roebling
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～ United States engineer (born in Germany) who designed and began construction of the Brooklyn bridge (1806-1869)
Jolly Roger
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～ a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship
Jelly Roll Morton
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～ United States jazz musician who moved from ragtime to New Orleans jazz (1885-1941)
Jack Roosevelt Robinson
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～ United States baseball player; first Black to play in the major leagues (1919-1972)
jump rope
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～ a child's game or a cardiopulmonary exercise in which the player jumps over a swinging rope
jump rope
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～ a length of rope (usually with handles on each end) that is swung around while someone jumps over it
Japanese rose
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～ vigorously growing rose having clusters of numerous small flowers; used for hedges and as grafting stock
James Clark Ross
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～ British explorer of the Arctic and Antarctic; located the north magnetic pole in 1831; discovered the Ross Sea in Antarctica; nephew of Sir John Ross (1800-1862)
John Ross
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～ Scottish explorer who led Arctic expeditions that yielded geographic discoveries while searching for the Northwest Passage (1777-1856)
jungle rot
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～ skin disorder induced by a tropical climate
Jean-Jacques Rousseau
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～ French philosopher and writer born in Switzerland; believed that the natural goodness of man was warped by society; ideas influenced the French Revolution (1712-1778)
John Rowlands
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～ Welsh journalist and explorer who led an expedition to Africa in search of David Livingstone and found him in Tanzania in 1871; he and Livingstone together tried to find the source of the Nile River (1841-1904)
John Roy Major
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～ British statesman who was prime minister from 1990 until 1997 (born in 1943)