púa

Púa is a noun used in Spanish and Portuguese with several related meanings centered on a small, sharp projection. The term commonly denotes a thorn or spine on plants or animals, or a bristle or point on seeds and other structures. It can also describe a projecting tooth or prong on various objects.

In music, púa refers to a guitar pick or plec-trum, a small, flat piece of plastic, nylon, or other material used to pluck strings on instruments such as guitars and mandolins. It is held between the thumb and index finger, and its material, thickness, and shape influence tone, attack, and precision.

In botany and zoology, púa describes sharp projections like thorns on plants (for example roses) or spines on cacti. It can also refer to awns or bristles on seeds and grasses. These projections often serve defense or dispersal functions, and may interact with animals or clothing as plants and seeds move or attach.

In other contexts, the term can denote any projecting tooth, hook, or barb on tools, machinery, or devices. The precise meaning of púa depends on regional usage and the specific field, ranging from plant morphology to musical equipment and mechanical components. The common thread is a characteristic sharp projection that serves a functional purpose in its context.