What is the Lord's Supper?
The eating of the bread and the drinking of the cup in remembrance of the sufferings and death of Christ.
Luke 22:19-20 And when He had taken some bread and given thanks, He broke it, and gave it to them, saying, "This is My body which is given for you; do this in remembrance of Me." And in the same way He took the cup after they had eaten, saying, "This cup which is poured out for you is the new covenant in My blood."