ruby

definition: of a color at the end of the color spectrum (next to orange)
example:
speech part: adjective
synonyms: crimson
definition: a deep and vivid red color
example:
speech part: noun
synonyms: crimson
definition: a transparent piece of ruby that has been cut and polished and is valued as a precious gem
example:
speech part: noun
synonyms:
definition: a transparent deep red variety of corundum
example:
speech part: noun
synonyms:

ruby is explained and pronounced

How ruby is being used?