Strong Spine
Scholars have said that if one dreams of having a strong spine, they may be blessed with sound intellect or a strong child. It was also said that the spine may symbolize a strong man upon whom one can rely. A moderate height is commendable, while excessive height might indicate the approach of one's end, and shortness could suggest a short life and status.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam