·noun The color of the gem; bright blue.
II. Sapphire ·adj Of or resembling sapphire; sapphirine; blue.
III. Sapphire ·noun Any humming bird of the genus Hylocharis, native of South America. The throat and breast are usually bright blue.
IV. Sapphire ·noun Native alumina or aluminium sesquioxide, Al2O3; corundum; ·esp., the blue transparent variety of corundum, highly prized as a gem.