a healing: a cure or act of being made well
This word names healing as something that happens: a cure, the restoring of a sick or broken body to health. In the New Testament it shows up only three times, and always in the same phrase, which Paul writes in the plural twice over: "gifts of healings."
That odd doubled plural is doing deliberate work. Paul is not describing a person who holds a permanent power to heal anyone of anything. He is describing many separate acts of healing, each one a fresh gift handed out by the one Spirit as God chooses. There are no standing "healers" in his picture, only graced moments of healing. Nearly every major commentator reads the plural this way, whatever they conclude about whether such gifts still operate today.
The word also carried a loaded echo for Paul's first readers in Corinth. Across town stood a famous temple of the healing god Asclepius, packed with clay models of the body parts people believed the god had cured. The very word for those advertised temple cures was this one, healings. So when Paul says the true healings come as gifts of God's Spirit, a Corinthian could hardly miss the contrast, even though Paul never names the rival god. Behind the word also lies the Old Testament conviction, carried in the Greek translation Paul knew, that genuine healing comes from God alone.