The Collaborative International Dictionary of English v.0.48:

Rusticate \Rus"ti*cate\, v. i. [imp. & p. p. Rusticated; p.
   pr. & vb. n. Rusticating.] [L. rusticaticus, p. p. of
   rusticari to rusticate. See Rustic.]
   To go into or reside in the country; to ruralize. --Pope.
   [1913 Webster]