Emily Dickinson Lexicon

AC'OR-US, n. [L. from Gr. ακορον.]

1. Sweet flag, or sweet rush.
2. In natural history, blue coral, which grows in the form of a tree, on a rocky bottom, in some parts of the African seas. It is brought from the Camarones and Benin. – Encyc.
3. In medicine, this name is sometimes given to the great galangal. – Encyc.