'Loaf' in the Bible

The cup of blessing, which we bless, does it not mean a joint-participation in the blood of Christ? The loaf of bread which we break, does it not mean a joint-participation in the body of Christ?

Because there is one loaf, we who are many are one body, because all of us eat from the same loaf.

For I received from the Lord what I also passed on to you how the Lord Jesus, on the night he was betrayed, took a loaf of bread,