a bay in the Philippines, in W Luzon Island: the American fleet under Admiral Dewey defeated the Spanish fleet 1898.
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British Dictionary definitions for manila bay
an almost landlocked inlet of the South China Sea in the Philippines, in W Luzon: mostly forms Manila harbour. Area: 1994 sq km (770 sq miles)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012