Rhuddem, n. a ruby
Rhudden, n. a red streak
Rhuddfa, Rhuddfan, n. parched spot
Rhuddfelyn, n. orange yellow
Rhuddgoch, a. pink red
Rhuddiad, n. a turning to crimson
Rhuddin, n. heart of timber
Rhuddion, n. husks
Rhuddlas, a. crimson blue
Ruddlwyd, a. russet colour