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Any of several plants of the genus Ranunculus of the buttercup family, having lance-shaped leaves and yellow flowers.
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.
(Plants) any of several Eurasian ranunculaceous plants of the genus Ranunculus, such as R. flammula (lesser spearwort) and R. lingua (great spearwort), which grow in wet places and have long narrow leaves and yellow flowers. See also buttercup
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
any of several buttercups having lance-shaped leaves and small flowers, as Ranunculus ambigens, of the eastern U.S., growing in mud.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.