The Collaborative International Dictionary
Adder's-tongue
Adder's-tongue \Ad"der's-tongue`\, n. (Bot.)
A genus of ferns ( Ophioglossum), whose seeds are produced on a spike resembling a serpent's tongue.
The yellow dogtooth violet.
--Gray.
Wiktionary
adder's-tongue
n. 1 Any of a genus of ferns (''Ophioglossum''), whose spores are produced on a spike resembling a serpent's tongue. 2 The yellow dogtooth violet.
Usage examples of "adder's-tongue".
So did yellow and lavender adder's-tongues, which told Gorgidas of Sivas' skill.