fundament
英 ['fʌndəm(ə)nt]
美 
	    - n. 基础;臀部;肛门
 
英英释意
- 1. the fundamental assumptions from which something is begun or developed or calculated or explained;
 - "the whole argument rested on a basis of conjecture"
 
- 2. 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?"
 
- 3. lowest support of a structure;
 - "it was built on a base of solid rock"
 - "he stood at the foot of the tower"