1. A rainbow; an iris

Derived forms: sunbows

• C. diphtheriae
• C. H. Best
• C. K. Ogden
• C. Northcote Parkinson
• C. P. Snow
• C. psittaci
• C. S. Forester
• C. S. Lewis
• C. trachomatis
• C. Vann Woodward
• C. W. Post
• C2H6
• Ca
• ca-ca
• Caaba
• cab
• cab fare
• cabal
• cabala
• cabalism
• cabalist
• cabalistic
• caballero
• cabana
• cabaret