ruby
UK[ˈruːbi]US[ˈruːbi]
n
a precious red stone that is a type of corundum
n
a deep red colour
Etymology
the word 'ruby' traces a direct path from the latin adjective 'rubeus', meaning 'red', through medieval latin and old french. its journey into english was complete by the late middle ages, solidifying its reference specifically to the valuable red gemstone. the logic is beautifully straightforward: the stone is named for its quintessential and highly prized colour. this demonstrates a common naming pattern where a precious object inherits its name from a dominant, visually striking property.
Analysis
the word 'ruby' is a simplex loanword. it entered english from old french 'rubi', which itself derived from medieval latin 'rubinus lapis', meaning 'red stone'. the ultimate source is latin 'rubeus', meaning 'red'.
Examples
the ring was set with a large, flawless ruby.
she preferred the deep ruby of the older wine.
in the story, the wizard's staff was tipped with a glowing ruby.