Pulvilli

Part of speech: noun

Definitions

1. A specialized structure found on the feet of some insects and spiders that aids in adhesion to surfaces
2. An anatomical feature consisting of pads or lobes that enhance grip and support locomotion in certain arthropods
3. A type of adhesive pad used by various small animals, enabling them to cling to smooth or vertical surfaces effectively

Etymology: "Pulvilli" is the plural of "pulvillus", a Latin diminutive of "pulvinus", meaning "a little cushion." The name fits the structure well: these are the small soft pads on the feet of insects, spiders and some other small animals, which press against a surface and grip by adhesion. The Latin image of a cushion is a simple, literal description of the padded tissue that makes such clinging possible. Because the Latin word was a plain diminutive, the term is a descriptive coinage from classical roots rather than a traditional word that drifted into scientific use. Its meaning stayed close to its original sense: a small cushion, now applied to a biological structure instead of a piece of furniture.