Emily Dickinson Lexicon

FLU'OR, n. [Low L. from fluo, to flow.]

1. A fluid state. Newton.
2. Menstrual flux. [Little used in either sense.]
3. In mineralogy, fluorid of calcium, usually called fluor-spar. It commonly occurs massive; but crystalizes in octahedrons, which are frequently changed into cubes. It is a mineral of beautiful colors, and much used for ornamental vessels. This is the material of which the original myrrhine vessels of the ancients were made.