pelvis

A basin-shaped structure of the skeleton of many vertebrates, composed in humans of the hipbones on the sides, the pubis in front, and the sacrum and coccyx behind, that rests on the lower limbs and supports the spinal column.

The cavity formed by this structure.

A bony basin forming the most inferior of posterior one of the three great cavities—thoracic, abdominal, and pelvic—of the trunk of most terrestrial vertebrates.

Hence Some pelviform structure or cuplike part.

[capitalized] A genus of mollusks.

The pelvic arch, or the pelvic arch together with the sacrum. See Pelvic arch, under pelvic, and sacrum.

The calyx of a crinoid.

the basinlike cavity into which the ureter expands as it joins the kidney.

The large compound bone structure at the base of the spine that supports the legs. It consists of hip bone, sacrum and coccyx.