Definitions

1. noun

In entomology, the base of the thorax in an insect; the first segment of the thorax, supporting the legs.

“The coxa of the beetle was damaged during the fall.”

2. noun

In anatomy, the ball-and-socket joint of the hip, formed by the femoral head and the acetabulum.

“The coxa of the human hip joint is a complex structure that allows for a wide range of motion.”