fundament

n 1: the fundamental assumptions underlying an explanation; "the

whole argument rested on a basis of conjecture" [syn: {basis},

{base}, {foundation}, {groundwork}, {cornerstone}]

2: the fleshy part of the human body that you sit on [syn: {buttocks},

{arse}, {butt}, {backside}, {bum}, {buns}, {can}, {hindquarters},

{hind end}, {keister}, {posterior}, {prat}, {rear}, {rear

end}, {rump}, {stern}, {seat}, {tail}, {tail end}, {tooshie},

{tush}, {bottom}, {behind}, {derriere}, {fanny}, {ass}]

3: lowest supporting part of a structure; "it was built on a

base of solid rock"; "he stood at the foot of the tower"

[syn: {foundation}, {base}, {foot}, {groundwork}, {substructure},

{understructure}]