bluestone

US 
UK ['bluːstəʊn]
  • na.【矿】硫酸铜;〈美〉(建筑或铺路用的)青石;黏土质砂岩
  • Web蓝石;蓝灰沙岩;胆矾
na.
1.
【矿】硫酸铜,胆矾;〈美〉(建筑或铺路用的)青石;黏土质砂岩

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard