To cause to go away by blowing, or by wind.
He blew away the dust which had collected on the book.
To disperse or to depart on currents of air.
I didn't have to rake. The leaves just blew away.
To kill (someone) by shooting them with a firearm.
The kid just blew the clerk away.
To flabbergast; to impress greatly.
The critics were blown away by their latest album.
To overwhelm.
To cause to go away, to get rid of
To delete (data, files, etc.).