adder's-tongue

1 definition found

adder's-tongue - Collaborative International Dictionary of English v.0.48 :

  Adder's-tongue \Ad"der's-tongue`\, n. (Bot.)
     (a) A genus of ferns (Ophioglossum), whose seeds are
         produced on a spike resembling a serpent's tongue.
     (b) The yellow dogtooth violet. --Gray.
         [1913 Webster]