noun
pelvis
PEL-vis/ˈpelvɪs/
The basin-shaped bony structure at the base of the spine.
The pelvis connects the lower spine with the upper legs.

Etymology
Latin pelvis meant a basin or washing vessel. The anatomical name applies that image to the basin-like cavity formed by the bones connecting the spine and legs.
In context
… the pelvis consists of three bones. The right hip bone, the left hip bone, and the sacrum. Together, these three bones form the bony pelvis.
More examples
- The model displayed the pelvis.
- Several pelves were examined.
- She labeled the bones of the pelvis.
Forms
pelvis · pelvises · pelves