Dictionary definition · ruby
noun
- a transparent piece of ruby that has been cut and polished and is valued as a precious gem
- a transparent deep red variety of corundum; used as a gemstone and in lasers
- a deep and vivid red color
adjective
- of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies
Source: Open English WordNet (CC BY 4.0).