vice admiral (v?s)n.1. A commissioned rank in the US Navy or Coast Guard that is above rear admiral and below admiral.2. One who holds this rank.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.vice admiral n (Military) a commissioned officer of flag rank in certain navies, junior to an admiral and senior to a rear admiral ?vice-?admiralty nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014