definition of
fundament

[1] #1 fundament n. [basis, base, foundation, groundwork, cornerstone] the fundamental assumptions from which something is begun or developed or calculated or explained; "the whole argument rested on a basis of conjecture". wn

[2] #2 fundament n. [buttocks, nates, 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] 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?". wn

[3] #3 fundament n. [foundation, base, foot, groundwork, substructure, understructure] lowest support of a structure; "it was built on a base of solid rock"; "he stood at the foot of the tower". wn