ETYM French rubis (cf. Pr. robi), Late Lat. rubinus, robinus, from Latin rubeus red, reddish, akin to ruber. Related to Rouge, red.
1. A transparent deep red variety of corundum; used as a gemstone and in lasers.
2. A transparent piece of ruby that has been cut and polished and is valued as a precious gem.
The red transparent gem variety of the mineral corundum Al2O3, aluminum oxide. Small amounts of chromium oxide, Cr2O3, substituting for aluminum oxide, give ruby its color. Natural rubies are found mainly in Myanmar (Burma), but rubies can also be produced artificially and such synthetic stones are used in lasers.

Of the color ruby

1. City in Alaska (USA); zip code 99768.
2. Town in South Carolina (USA); zip code 29741.

An interpreted open source scripting language for object-oriented programming. Its simple syntax is partially based on the syntax of Eiffel and Ada. Considered to be similar to Perl, it has many features to process text files and perform system management tasks.