Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
any of various ferns with sword-shaped leaves; esp., a giant fern (Nephrolepis biserrata) of S Florida, with pinnate leaves
Used by arrangement with John Wiley & Sons, Inc.
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Any of various ferns of the genus Nephrolepis, including the Boston fern, having bipinnately compound fronds and sori at the vein tips.