Dictionary.net

• tall leafy European biennial or perennial having spectacular clusters of large tubular pink-purple flowers; leaves yield drug digitalis and are poisonous to livestock

2006 - WordNet 3.0
By Princeton University

• tall leafy European biennial or perennial having spectacular clusters of large tubular pink-purple flowers; leaves yield drug digitalis and are poisonous to livestock

2011 - English Dictionary Database
By DataStellar Co., Ltd