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An arm of the Irish Sea separating northwest England from southwest Scotland.
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.
(Placename) an inlet of the Irish Sea between SW Scotland and NW England. Length: about 56 km (35 miles)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Sol′way Firth′(ˈsɒl weɪ)
an arm of the Irish Sea between SW Scotland and NW England. 38 mi. (61 km) long.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.