The color of the gem; bright blue.
Native alumina or aluminium sesquioxide, Al2O3; corundum; esp., the blue transparent variety of corundum, highly prized as a gem.
Any humming bird of the genus Hylocharis, native of South America. The throat and breast are usually bright blue.
Of or resembling sapphire; sapphirine; blue.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About