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Related to Alcatraz: Alcatraz Escape
A rocky island of northern California in San Francisco Bay. It was a military prison from 1859 to 1933 and a federal prison until 1963. It is now a tourist attraction. The island has long been known as "the Rock."
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 island in W California, in San Francisco Bay: a federal prison until 1963
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
an island in San Francisco Bay: site of a U.S. penitentiary 1933–63.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.