spine
nounUK /spaɪn/
US /spaɪn/
The row of bones down the middle of your back.
She felt a chill run down her spine.
RELATED WORDS
OTHER MEANINGS
2. A sharp point on a plant or animal.
The cactus has sharp spines that keep animals away.
3. The main support or most important part of something.
Trust is the spine of a good friendship.
4. The narrow part of a book where the pages are joined.
The title is printed on the book's spine.