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Ru·pert(ro͞o′pərt), Prince 1619-1682.
German-born English military and political leader who was the dominant Royalist figure during the English Civil War.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Biography) Prince. 1619–82, German-born nephew of Charles I: Royalist general during the Civil War (until 1646) and commander of the Royalist fleet (1648–50). After the Restoration he was an admiral of the English fleet in wars against the Dutch
(Military) military derogatory slang a junior officer in the British army
[from association of this forename with high social class in Britain ]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014