I. transitive verb
: to dissipate or remove (something) as if with a current of air
the whole well-ordered system has been blown away — Roger Fry
even this caution … might well be blown away by the rush of buying … before the holiday — Newsweek
II. transitive verb
1. : to kill by gunfire : shoot dead
2. : to impress very strongly and usually favorably
a single idea, well conceived and well executed, can still blow us all away — advt
3. : to defeat or outperform by a wide margin