blow someone away

자료: Cambridge Dictionary of American Idioms © Cambridge University Press 2003,  http://idioms.thefreedictionary.com/blow+away

blow someone away

1. to cause someone great pleasure or surprise. 

• Everyone I tell that story to, I mean everyone, is just blown away. 
• That new exhibit of ancient gold objects at the museum is so amazing, it will blow you away!

2. to defeat someone completely. 

• The Warriors ended an 11-game losing streak by blowing away the Boston Beans 101—87.
  

3. to kill someone. 

• It's basically a dull movie except for the scene where Francie gets to blow away some bad guys. You know, it probably won't be an accident that blows me away but some health problem.