Blow up: Explode or be destroyed by explosion
Why do cars in movies always blow up when they fall off a cliff?
Blow up: Cause (something or someone) to explode
We had to blow up the bridge before the enemy army arrived.
Blow up: Inflate or fill with air
Let’s blow up the balloons for the party.
Blow up: Enlarge or zoom in
Blow up the picture to get a better look at their faces.
Blow up: Suddenly get very angry
Example: Dad blew up at me when I told him I was pregnant.