fundament

[fuhn-duh-muh nt] /ˈfʌn də mənt/
noun
1.
the buttocks.
2.
the anus.
3.
a base or basic principle; underlying part; foundation.
Origin
1250-1300; < Latin fundāmentum foundation; replacing Middle English fondement < Old French. See found2, -ment
Examples from the web for fundament
  • All other announcements are a pain in the fundament.
  • Lying: it's the fundament of all fiction--and what comedians, those unbeautiful little people, do to get attention.
  • It wasn't only a matter of embodying a nation, though that was the fundament of the electoral arrangement.
  • There is too much focus on useful hints but with little or no theoretical fundament.
  • Moreover, there is a logical flaw at the fundament of plaintiffs' argument.
British Dictionary definitions for fundament

fundament

/ˈfʌndəmənt/
noun
1.
(euphemistic or facetious) the buttocks
2.
the natural features of the earth's surface, unaltered by man
3.
a base or foundation, esp of a building
4.
a theory, principle, or underlying basis
Word Origin
C13: from Latin fundāmentum foundation, from fundāre to found²
Word Origin and History for fundament
n.

late 13c., "buttocks, anus," from Old French fondement "foundation, bottom; anus" (12c.), from Latin fundamentum "a foundation," from fundare "to found" (see bottom). So called because it is where one sits.

Alle þe filþ of his magh ['maw'] salle breste out atte his fondament for drede. ["Cursor Mundi," early 14c.]

fundament in Medicine

fundament fun·da·ment (fŭn'də-mənt)
n.
See anus.