Definition - resembling the buttocks

Natis is the Latin word for “buttocks,” and from it we get our word nates (“buttocks”). But sometimes one has need to referring to things that resemble the buttocks, so we further adopted natis for our natiform. And the speakers of our language have found the need for a number of similar words over the years, for in addition to natiform we have natal (“of or relating to the buttocks”), gluteal (“of, relating to, or in the region of the gluteus muscles”), and pygal (“of, relating to, or located in the region of the rump or posterior end of the back”).