Definition of colour-de-roy in English:

colour-de-roy

(US color-de-roy)

noun

Scottish
historical
  • A cloth of a rich purple colour associated with the French kings; this colour itself. Later also: a bright tawny colour; a cloth of this colour.

Origin

Mid 16th century. From Middle French couleur de roy, lit. ‘king's colour’ (although this is first attested slightly later: 1543; French couleur de roi) from couleur + de + roy king.

Pronunciation

colour-de-roy

/ˌkʌlədəˈrɔɪ/