|Noah Webster's Dictionary|
1. (n.) The column of bones in the back which sustains and gives firmness to the frame; the spine; the vertebral or spinal column.
2. (n.) Anything like , or serving the purpose of, a backbone.
3. (n.) Firmness; moral principle; steadfastness.
Backbone (1 Occurrence)
Leviticus 3:9 He shall offer from the sacrifice of peace offerings an offering made by fire to Yahweh; its fat, the entire tail fat, he shall take away close to the backbone; and the fat that covers the inwards, and all the fat that is on the inwards, (WEB KJV ASV BBE DBY NAS RSV NIV)