score:1
I have never heard [of] a pronoun used for the Eucharist.
This section II. WHAT IS THIS SACRAMENT CALLED? in the Catechism of the Catholic Church lists the different names given to the Eucharist:
1) Eucharist, because it is an action of thanksgiving to God.
2) The Lord's Supper.
3) The Breaking of Bread.
4) The memorial of the Lord's Passion and Resurrection.
5) The Holy Sacrifice.
6) Most Blessed Sacrament.
7) Holy Communion.
8) The holy things (ta hagia; sancta).
9) The bread of angels, bread from heaven, medicine of immortality, viaticum ...
He (the LORD) is truly present in the Blessed Sacrament of the Altar
or
He is truly present under the appearances of bread and wine
Cf. Eucharist Hymn: Adoro Te Devote by St. Thomas Aquinas (1225-1274):
Hidden God, devoutly I adore Thee,
Truly present underneath these veils:
All my heart subdues itself before Thee,
Since it all before Thee faints and fails.[...]