Bay of Pigs n (Placename) a bay on the SW coast of Cuba: scene of an unsuccessful invasion of Cuba by US-backed troops (April 17, 1961). Spanish name: Bahia de los Cochinos Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Bay? of Pigs? n. a bay of the Caribbean Sea in SW Cuba: site of attempted invasion of Cuba by anti-Castro forces April 1961. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.