Source : Webster's Revised Unabridged Dictionary (1913)

Cycad \Cy"cad\ (s[imac]"k[a^]d), n. (Bot.)
   Any plant of the natural order {Cycadace[ae]}, as the sago
   palm, etc.

Source : WordNet®

cycad
     n : any tropical gymnosperm of the order Cycadales; having
         unbranched stems with a crown of fernlike leaves