Table of Contents POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
THESAURUS

WORDNET DICTIONARY

Noun fundament has 3 senses

• fundament(n = noun.cognition) base, basis, cornerstone, foundation, groundwork - the fundamental assumptions from which something is begun or developed or calculated or explained; "the whole argument rested on a basis of conjecture"
is a part of explanation
has particulars: meat and potatoes
is a kind of assumption, supposal, supposition

• fundament(n = noun.body) arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush - 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?"
is a kind of body part
is a part of body, torso, trunk

• fundament(n = noun.artifact) base, foot, foundation, 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"
has particulars: bed, raft foundation
is a part of construction, structure
is a kind of support

CIDE DICTIONARY

OXFORD DICTIONARY

THESAURUS

fundament

backside, base, basement, basis, beam, bearing wall, bed, bedding, bedrock, behind, belly, bottom, bottom side, breech, buttocks, derriere, downside, floor, flooring, fond, footing, foundation, fundamental, ground, grounds, groundwork, hardpan, lower side, lowest layer, lowest level, nether side, nethermost level, pavement, posterior, principle, radical, rear, riprap, rock bottom, rudiment, rump, seat, sill, solid ground, solid rock, stereobate, stylobate, substratum, substruction, substructure, terra firma, underbelly, underbuilding, undercarriage, undergirding, underlayer, underneath, underpinning, underside, understruction, understructure

For further exploring for "fundament" in Webster Dictionary Online