any plant of the genus Phlox, of North America, certain species of which are cultivated for their showy flowers of various colors. Compare phlox family.
2.
the flower of this plant.
Origin: 1595–1605; < Medieval Latin, special use of Latinphlox < Greekphlóx a flame-colored plant, literally, flame. See phlegm, phlogistic
1706, from L., where it was the name of a flower (Pliny), from Gk. phlox "kind of plant with showy flowers" (probably Silene vulgaris), lit. "flame," related to phlegein "to burn" (see bleach). Applied to the N.Amer. flowering plant by Ger. botanist Johann Jakob Dillenius (1684-1747).