1. 
[syn: hound's-tongue, Cynoglossum officinale]
The Collaborative International Dictionary of English v.0.48:
Hound's-tongue \Hound's"-tongue`\, n. [AS. hundes tunge.] (Bot.)
   A biennial weed (Cynoglossum officinale), with soft
   tongue-shaped leaves, and an offensive odor. It bears nutlets
   covered with barbed or hooked prickles. Called also
   dog's-tongue.
   [1913 Webster]
WordNet (r) 3.0 (2006):
Cynoglossum officinale
    n 1: biennial shrub of Europe and western Asia having coarse
         tongue-shaped leaves and dark reddish-purple flowers [syn:
         hound's-tongue, Cynoglossum officinale]