serration
noun
- saw-like appearance, or a row of sharp or tooth-like projections, often on a blade
- act or process of causing to have tooth-like edges
Wiktionary
noun
- The state of being serrated.
- A set of teeth or notches.
“On reaching the outer reef I was startled at the sight of the gigantic combers roaring along the serrations and knife-edges of coral, but Benny was not in the least alarmed.”
- One of the teeth in a serrated or serrate edge.