webbed foot

This term describes a specific anatomical adaptation where skin stretches between the digits. It is most commonly associated with waterfowl, amphibians, and certain marine mammals, serving as a biological paddle to increase surface area and propel the animal through water.

In a descriptive context, the term is purely biological and lacks the metaphorical flexibility of the word "web" (as in a web of lies). It is used primarily in zoological or anatomical descriptions to distinguish aquatic species from those with separate toes.