The Collaborative International Dictionary of English v.0.48:

Crocose \Cro"cose\ (kr[=o]"k[=o]s), n. [Gr. kro`kos saffron.]
   (Chem.)
   A white crystalline sugar, metameric with glucose, obtained
   from the coloring matter of saffron. [Written also
   crokose.]
   [1913 Webster]