Arukah (אֲרוּכָה) describes the healing and restoration of a wound — specifically, the growth of new flesh over an injury. The word carries the sense of complete, organic healing rather than merely covering over a wound. It is used both literally for physical healing and metaphorically for national and spiritual restoration.
Arukah beautifully illustrates the gospel's promise of thorough healing. The prophets Jeremiah and Isaiah used this word to promise that God would bring complete restoration to broken Israel — not a superficial patching, but genuine new growth. This healing comes through the Suffering Servant (Isaiah 53:5): "by His wounds we are healed."