brim of the pelvis

: the upper boundary of the true pelvis formed by the iliopectineal line, the crests of the pubic bones, and the front margin of the base of the sacrum

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now