a river in S Scotland, flowing NW into the Firth of Clyde. 106 miles (170 km) long.
Firth of, an inlet of the Atlantic, in SW Scotland. 64 miles (103 km) long.
a male given name: a Scottish family name, after the Clyde River.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for firth-of-clyde
Firth of Clyde an inlet of the Atlantic in SW Scotland. Length: 103 km (64 miles)
a river in S Scotland, rising in South Lanarkshire and flowing northwest to the Firth of Clyde: formerly extensive shipyards. Length: 170 km (106 miles)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for firth-of-clyde
masc. proper name, from the family name, from the region of the Clyde River in Scotland (see Clydesdale). Most popular in U.S. for boys c.1890-1910, falling off rapidly thereafter, hence probably its use in 1940s teenager slang for "a square, one not versed in popular music or culture."
Online Etymology Dictionary, © 2010 Douglas Harper