Source : Webster's Revised Unabridged Dictionary (1913)

Candytuft \Can"dy*tuft`\, n. (Bot.)
   An annual plant of the genus {Iberis}, cultivated in gardens.
   The name was originally given to the {I. umbellata}, first,
   discovered in the island of Candia.

Source : WordNet®

candytuft
     n : any of various flowering plants of the genus Iberis
         cultivated for their showy clusters of white to red or
         purple flowers; native to Mediterranean region