Source : Webster's Revised Unabridged Dictionary (1913)

Eucharist \Eu"cha*rist\, n. [L. eucharistia, Gr. e'ycharisti`a,
   lit., a giving of thanks; e'y^ + cha`ris favor, grace,
   thanks; akin to chai`rein to rejoice, and prob. to yearn: cf.
   F. eucharistie.]
   1. The act of giving thanks; thanksgiving. [Obs.]

            Led through the vale of tears to the region of
            eucharist and hallelujahs.            --South.

   2. (Eccl.) The sacrament of the Lord's Supper; the solemn act
      of ceremony of commemorating the death of Christ, in the
      use of bread and wine, as the appointed emblems; the
      communion. -- See {Sacrament}.

Source : WordNet®

Eucharist
     n : a Christian sacrament commemorating the Last Supper by
         consecrating bread and wine [syn: {Holy Eucharist}, {sacrament
         of the Eucharist}, {Holy Sacrament}, {Liturgy}, {Eucharistic
         liturgy}, {Lord's Supper}]