Buttock and Buttocks

Buttock noun - Either of the two large fleshy masses of muscular tissue that form the human rump.

Buttocks is a synonym for buttock in bottom topic. In some cases you can use "Buttocks" instead a noun "Buttock".

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

Buttock is a synonym for buttocks. You can use "Buttock" instead a noun "Buttocks".