Longlegs describes something with unusually long legs compared to its body or to what's typical. You might call a crane or heron a longlegs because its skinny legs seem almost comically tall for its body. The name fits certain spiders too: some people call very long-legged spiders “daddy longlegs” because their thread-thin legs stretch out much longer than their tiny bodies.

People sometimes use longlegs as a nickname for someone especially tall. In children's books and nature writing, you'll often see longlegs used affectionately to describe gangly animals like young colts or foals, whose legs seem too long for their bodies as they grow.

The word captures something both graceful and slightly awkward: those elongated legs can look elegant when a heron wades through water, or wonderfully clumsy when a newborn deer struggles to stand. Longlegs refers to proportion, to legs that make you notice them right away because they stand out compared to the rest of the body.