Dictionary
ad•der's-tongue
Pronunciation: (ad'urz-tung"), [key]—
n.
1. a fern of the genus
Ophioglossum, having one or sometimes two sterile leaves and a fruiting spike.
2. any of several American dogtooth violets.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.