fundament Meaning, Definition & Usage

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

WordNet

Fun"da*ment noun
Etymology
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.
Definitions
  1. Foundation. Obs. Chaucer.
  2. The part of the body on which one sits; the buttocks; specifically (Anat.), the anus. Hume.

Webster 1913