'Fundament' definitions:

Definition of 'fundament'

From: WordNet
noun
The fundamental assumptions from which something is begun or developed or calculated or explained; "the whole argument rested on a basis of conjecture" [syn: basis, base, foundation, fundament, groundwork, cornerstone]
noun
The fleshy part of the human body that you sit on; "he deserves a good kick in the butt"; "are you going to sit on your fanny and do nothing?" [syn: buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass]
noun
Lowest support of a structure; "it was built on a base of solid rock"; "he stood at the foot of the tower" [syn: foundation, base, fundament, foot, groundwork, substructure, understructure]

Definition of 'Fundament'

From: GCIDE
  • Fundament \Fun"da*ment\, n. [OE. fundament, fundement, fondement, OF. fundement, fondement, F. fondement, fr. L. fundamentum foundation, fr. fundare to lay the bottom, to found, fr. fundus bottom. See Fund.]
  • 1. Foundation. [Obs.] --Chaucer. [1913 Webster]
  • 2. The part of the body on which one sits; the buttocks; specifically (Anat.), the anus. --Hume. [1913 Webster]