tier
英 [tɪə]
美[tɪr]
	    - n. 层,排;行,列;等级
 - vt. 使层叠
 - vi. 成递升徘列
 - n. (Tier)人名;(英)蒂尔
 
英英释意
- 1. a relative position or degree of value in a graded group;
 - "lumber of the highest grade"
 
- 2. any one of two or more competitors who tie one another
 
- 3. a worker who ties something
 
- 4. something that is used for tying;
 - "the sail is fastened to the yard with tiers"
 
- 5. one of two or more layers one atop another;
 - "tier upon tier of huge casks"
 - "a three-tier wedding cake"