buttock

About 0.40 uses per million words.

Meaning

1. noun Each of the two large fleshy halves of the posterior part of the body between the base of the back, the perineum, and the top of the legs.
2. noun The convexity of a ship behind, under the stern.

Similar words

cheek gluteal cleft pudendum glute seat sit bone small of the back crotch gluteal anal cleft

Often followed by

and muscles to or of pain is lines with

Word family

buttocks