Eucharist
noun
[ ˈjuːk(ə)rɪst ]
• the Christian service, ceremony, or sacrament commemorating the Last Supper, in which bread and wine are consecrated and consumed.
• "we went to an early morning Eucharist"
Origin:
late Middle English: from Old French eucariste, based on ecclesiastical Greek eukharistia ‘thanksgiving’, from Greek eukharistos ‘grateful’, from eu ‘well’ + kharizesthai ‘offer graciously’ (from kharis ‘grace’).