GNU Collaborative International Dictionary of English

Found one definition

1.       
   Spadix , n.; pl. L. Spadices , E. Spadixes . [L., a palm branch broken off, with its fruit, Gr. .]
   (Bot.) A fleshy spike of flowers, usually inclosed in a leaf called a spathe.
   1913 Webster
   (Zool.) A special organ of the nautilus, due to a modification of the posterior tentacles.
   1913 Webster