dimpled

Dimpled is an adjective describing a surface or object that is marked with small indentations, or dimples. The term derives from the noun dimple, a shallow natural indentation, typically seen on the cheeks or chin. When something is described as dimpled, it has a regular pattern of these small depressions, whether caused by design, manufacturing, or natural variation.

In engineering and design, dimpling is often intentional. Golf balls are the classic example: their many dimples create a dynamic air flow that reduces drag and stabilizes flight. Dimpled textures are also used on heat exchangers and other surfaces to modify flow or heat transfer by promoting turbulence in the boundary layer.

In biology and anatomy, facial dimples are small indentations that occur in some people when they smile. They are a genetic trait and are commonly considered a cosmetic feature. The underlying cause is a variation in facial muscle attachment, particularly the zygomaticus major.

In agriculture and food marketing, "dimpled" is used to describe produce with shallow surface indentations, such as dimpled potatoes. The texture can influence appearance, surface roughness, and handling.

In materials and textiles, dimpled patterns can describe leather, fabrics, or metals that have a bumpy or honeycomb-like texture produced by pressing or stamping.

Most uses of the word are descriptive rather than normative, and the meaning relies on the context to indicate whether the dimples are natural, engineered, or incidental.