Definitions for "Holy Ghost"
Keywords:  ghost, trinity, son, father, spirit
Holy Ghost: another name for the Holy Spirit.
the third person in the Trinity; Jesus promised the Apostles that he would send the Holy Spirit after his Crucifixion and Resurrection; it came on Pentecost
The third member of the Godhead, a personage of spirit, unlike the Father and Son who have bodies of flesh and bones.