Definition of gentian noun from the Oxford Advanced Learner's Dictionary

 

gentian

 noun
noun
BrE BrE//ˈdʒenʃn//
 
; NAmE NAmE//ˈdʒenʃn//
 
[countable, uncountable]
 
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a small plant with bright blue flowers that grows in mountain areas Word Origin late Middle English: from Latin gentiana, according to Pliny named after Gentius, king of Illyria, who is said to have discovered the medicinal properties of a common species.
See the Oxford Advanced American Dictionary entry: gentian