Source : Webster's Revised Unabridged Dictionary (1913)

Rustication \Rus`ti*ca"tion\, n. [L. rusticatio.]
   1. The act of rusticating, or the state of being rusticated;
      specifically, the punishment of a student for some
      offense, by compelling him to leave the institution for a
      time.

   2. (Arch.) Rustic work.

Source : WordNet®

rustication
     n 1: the condition naturally attaching to life in the country
     2: the construction of masonry or brickwork in a rustic manner
     3: the action of retiring to and living in the country
     4: temporary dismissal of a student from a university
     5: banishment into the country