noun.
A precious stone next in hardness to the diamond, and nearly as valuable when of fine quality: a variety of the mineral corundum.
noun.
The color of the sapphire; blue.
noun.
In heraldry, a tincture, the color blue, in blazoning by means of precious stones. Compare blazon, n., 2.
noun.
In ornithology, a sapphirewing.
Resembling sapphire; of a deep brilliant blue.