Source : Webster's Revised Unabridged Dictionary (1913)

Eucharistic \Eu`cha*ris"tic\, Eucharistical \Eu`cha*ris"tic*al\,
   a. [Cf. F. eucharistie.]
   1. Giving thanks; expressing thankfulness; rejoicing. [Obs.]

            The eucharistical part of our daily devotions.
                                                  --Ray.

   2. Pertaining to the Lord's Supper. ``The eucharistic
      sacrament.'' --Sir. G. C. Lewis.

Source : WordNet®

Eucharistic
     adj : of or relating to the sacrament of the Eucharist; "the
           Eucharistic cup"