V signn. A hand sign indicating victory, solidarity, or approval, formed by holding the raised index and middle fingers in the shape of a V.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.V sign n. a sign of victory approval formed by raising the index and middle fingers in the shape of a V. [1940?45] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.