hart's-tongue definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a fern (Phyllitis scolopendrium) with narrow, simple fronds, found in Europe, Asia, and NE North America
hart's-tongue definition by American Heritage Dictionary
A European evergreen fern (Phyllitis scolopendrium) with narrow undivided fronds.
Origin: From the shape of its fronds.