Ba·hí·a Blan·ca (b?-h??? bl?ng?k?, bä-??ä vläng?kä) A city of eastern Argentina on the Bahía Blanca, an inlet of the Atlantic Ocean southwest of Buenos Aires. It is a major shipping and commercial center.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.Bahía Blanca (Spanish ba?ia ?blanka) n (Placename) a port in E Argentina. Pop: 276 000 (2005 est)Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014