Defn: See Agate, n., 2. [Eng.]
5. (Zoöl.)
Defn: Any species of South American humming birds of the genus Clytolæma. The males have a ruby-colored throat or breast. Ruby of arsenic, Ruby of sulphur (Chem.), a glassy substance of a red color and a variable composition, but always consisting chiefly of the disulphide of arsenic; — called also ruby sulphur. — Ruby of zinc (Min.), zinc sulphide; the mineral zinc blende or sphalerite. — Ruby silver (Min.), red silver. See under Red.
RUBY
Ru"by, a.
Defn: Ruby-colored; red; as, ruby lips.
RUBY
Ru"by, v. t. [imp. & p. p. Rubied; p. pr. & vb. n. Rubying.]
Defn: To make red; to redden. [R.] Pope.
RUBYTAIL
Ru"by*tail`, n. (Zoöl.)
Defn: A European gold wasp (Chrysis ignita) which has the under side of the abdomen bright red, and the other parts deep bluish green with a metallic luster. The larva is parasitic in the nests of other wasps and of bees.
RUBY-TAILED
Ru"by-tailed`, a.