8 letters · 13 points in Scrabble
noun one of the bony segments of the spinal column
originBorrowing from Latin vertebra (“a joint”), from vertō (“to turn”) + -bra (instrumental nominal suffix). Having multiple vertebrae (plural of vertebra) in one's backbone instead of having a single bone or solid spine, allows for the movement of the body with bends and turns. Hence meaning 1.
Etymology from Wiktionary, CC BY-SA 3.0