The Collaborative International Dictionary of English v.0.48:

Vomiturition \Vom`i*tu*ri"tion\, n. [Cf. F. vomiturition.]
   (Med.)
      (a) An ineffectual attempt to vomit.
      (b) The vomiting of but little matter; also, that vomiting
          which is effected with little effort. --Dunglison.
          [1913 Webster]