grammaticaster

from The Collaborative International Dictionary of English v.0.48

Grammaticaster \Gram*mat"icas"ter\, n. [LL.]
   A petty grammarian; a grammatical pedant or pretender.
   [1913 Webster]

         My noble Neophite, my little grammaticaster. --B.
                                                  Jonson.
   [1913 Webster]