Buttocks and Sacrum

Buttocks noun - The part of the body upon which someone sits.

Sacrum and buttocks are semantically related In some cases you can use "Sacrum" instead a noun "Buttocks".

Sacrum noun - Wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvis; its base connects with the lowest lumbar vertebra and its tip with the coccyx.

Buttocks and sacrum are semantically related in bottom topic. Sometimes you can use "Buttocks" instead a noun "Sacrum".

Nearby Word: sacral