blow off steam, To release pent-up energy or emotion, often through physical activity or expression.
blow one's mind, To amaze or overwhelm someone with something extraordinary.
blow the whistle, To report or expose wrongdoing or misconduct.
Word Origin
Language
Old English
Original word
blāwan
Originally meant
to blow, breathe, inflate
Background
The word 'blow' comes from the Old English 'blāwan', which means to blow or breathe. It has been used in English since before the 12th century, retaining its core meaning of expelling air.