The Collaborative International Dictionary of English v.0.48:

Convolve \Con*volve"\, v. t. [imp. & p. p. Convolved; p. pr. &
   vb. n. Convolving.] [L. convolvere, -volutum; con- +
   volvere to roll. See Voluble.]
   To roll or wind together; to roll or twist one part on
   another.
   [1913 Webster]

         Then Satan first knew pain,
         And writhed him to and fro convolved.    --Milton.
   [1913 Webster]