As I read the Bible, the term "saints" is not applied to dead Christians that have some miracles associated with them. "Saints" just refers to the believers. You and I are saints. The original Greek term simply means "holy one" or "set apart" or "sanctified". We are made holy through through His blood when we accept his sacrifice and become part of His Body (the church).
This is what I understand a saint to be as well.
St. Paul tells us in 1 Timothy 2 to make intercessions for our fellow Christians. That intercession doesn’t stop at the veil of death. The Body of Christ is contiguous beyond it.
Saints (Rev. 5:8) in heaven offer to God the prayers of those still on earth: “And when he had taken the book, the four beasts and four [and] twenty elders fell down before the Lamb, having every one of them harps, and golden vials full of odours, which are the prayers of saints.” (Rev. 5:8) and “And another angel came and stood at the altar, having a golden censer; and there was given unto him much incense, that he should offer with the prayers of all saints upon the golden altar which was before the throne. And the smoke of the incense, with the prayers of the saints, ascended up before God out of the angel’s hand.” (Rev. 8:3-4).
If there is no asking of saints in heaven to pray for us on earth, where do they get our prayers that they offer before the altar of God? Those prayers offered in heaven must be those of the saints on earth since the saints in heaven no longer need prayers.