coxa

This term is used exclusively within technical biological and anatomical contexts, specifically in entomology and comparative anatomy. It describes the basal segment of the limb, serving as the primary point of articulation between the appendage and the body wall. Because of its specialized nature, it is never used in general conversation or non-scientific descriptions of hips.

In Latin-based anatomical terminology, the word refers to the hip. When describing multiple limbs or species, the plural form follows the Latin second-declension pattern, changing the final a to ae.