This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The buttocks.

n. The anus.

n. The natural features of a land surface unaltered by humans.

n. A foundation, as of a building.

n. An underlying theoretical basis or principle: "All neighbor states ... must revise ... their policy fundaments” ( C.L. Sulzberger).

n. Foundation.

n. The bottom; the buttocks or anus.

n. The underlying basis or principle for a theoretical or mathematical system.

n. Foundation.

n. The part of the body on which one sits; the buttocks; specifically (Anat.), the anus.

n. Foundation; foundment.

n. The anus; the vent; the perineal region.

n. lowest support of a structure

n. the fleshy part of the human body that you sit on

n. the fundamental assumptions from which something is begun or developed or calculated or explained

"If they are actually altering the reading based on some "factor" they pulled out of their fundament, that is another problem."

body part   

fundamental   

foundation    buttock   

blue-covered    stefani    dial-plate    Keith    lividity    buggery    crown    fox-hunter    stag-horn    leatherbound