- A ridge of ground, crest of a hill, etc.
- The part of a bound book covering the backbone, and usually bearing the title and author's name.
- The hinged back of a book.
- The crest of a ridge.
Origin of spine
- Middle English from Old French espine from Latin spīna
From American Heritage Dictionary of the English Language, 5th Edition
- From Old French espine (modern French Ã©pine) or its source, Latin spÄ«na.