Definition
Fleur-de-lys is simply an alternate spelling of fleur-de-lis, the stylized lily or iris flower design. Both spellings refer to the same symbol. This symbol is closely linked to French royalty and represents perfection and light. Consider it like spelling 'gray' as 'grey' – same thing, different preference. You will see it in coats of arms, logos, and various decorative arts. Its meaning and usage are identical regardless of the spelling.