exacum
noun
ex·a·cum
ˈeksəkəm
1
capitalized : a genus of tropical Asiatic and African plants (family Gentianaceae) including one species (E. affine) of herbaceous biennials with bluish to dark lavender flowers that are often cultivated in the greenhouse
2
plural -s : any plant of the genus Exacum
Word History
Etymology
New Latin, from Latin, a kind of centaury, from Gaulish