WordNet (r) 3.0 (2006):

Eucharistic liturgy
    n 1: a Christian sacrament commemorating the Last Supper by
         consecrating bread and wine [syn: Holy Eucharist,
         Eucharist, sacrament of the Eucharist, Holy
         Sacrament, Liturgy, Eucharistic liturgy, Lord's
         Supper]