blunt instrumenta. a heavy object that is used to hit someone钝器:•The victim suffered a blow to the head from a blunt instrument.受害人头部遭到了钝器袭击。b. a method of doing something that does not work very well because it has a lot of other effects which you do not want无效的方法:•The exams are a blunt instrument which will reveal little about children's abilities.考试并不是有效的方法，它不大能反映孩子的能力。—bluntness noun U |