The Collaborative International Dictionary of English v.0.48:

Strophiole \Stro"phi*ole\, n. [L. strophiolum a little chaplet,
   dim. of strophium a band, Gr. ?, dim. of ? a twisted band:
   cf. F. strophiole.] (Bot.)
   A crestlike excrescence about the hilum of certain seeds; a
   caruncle.
   [1913 Webster]