The Collaborative International Dictionary of English v.0.48:

Diverticle \Di*ver"ti*cle\, n. [L. diverticulum, deverticulum, a
   bypath, fr. divertere to turn away.]
   1. A turning; a byway; a bypath. [Obs.] --Hales.
      [1913 Webster]

   2. (Anat.) A diverticulum.
      [1913 Webster]