Serration

However, it also appears on non-cutting surfaces, for example, in botany where a toothed leaf margin or other plant part, such as the edge of a carnation petal, is described as being serrated.

A serrated leaf edge may reduce the force of wind and other natural elements.

Screw threads show serration in profile, although they are usually shown in abbreviated or symbolic fashion on mechanical drawings to save time and ink.

Brogue shoes are made with serrated edges on the leather pieces, for no known purpose at all other than style.

Many such blades are scalloped,[5] having edges cut with curved notches, common on wood saws and bread knives.

These serrated knives are better able to cut through a firmer or tougher outer crust or skin without crushing the softer and more delicate inner crumb or flesh.