fundament

名词 fundament:

1. the fundamental assumptions from which something is begun or developed or calculated or explained
   同义词：basis, base, foundation, groundwork, cornerstone
2. the fleshy part of the human body that you sit on
   同义词：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
3. lowest support of a structure
   同义词：foundation, base, foot, groundwork, substructure, understructure

fun.da.ment

n.（名词）

The buttocks.
臀部
The anus.
肛门
The natural features of a land surface unaltered by human beings.
未受人类改变的自然地貌
A foundation, as of a building.
基础：如建筑物的基础
An underlying theoretical basis or principle:
基本原则或原理：
例句：
.All neighbor states . . . must revise . . . their policy fundaments.(C.L. Sulzberger)
.所有邻国…必须重新确定他们的政治原则.(C.L.苏兹贝格)

来源：
Middle English foundement
中古英语 foundement
from Old French fondement
源自 古法语 fondement
from Latin fund3mentum
源自 拉丁语 fund3mentum
from fund3re [to lay the foundation]
源自 fund3re [打地基]
from fundus [bottom]
源自 fundus [底部]