1.Definition: lowest support of a structure

Related Noun(s):base, foot, foundation, groundwork, substructure, understructure

Category: Objects

2.Definition: the fleshy part of the human body that you sit on

Related Noun(s):backside, behind, bottom, buns, buttocks, can, derriere, hindquarters, keister, nates, posterior, prat, rear, rump, seat, stern, tail, tooshie, tush

Category: General

3.Definition: the fundamental assumptions from which something is begun or developed or calculated or explained

Related Noun(s):base, basis, cornerstone, foundation, groundwork

Category: General