verb

1. To explode or be destroyed by explosion.

   “Why do cars in movies always blow up when they fall off a cliff?”

2. To cause (something or someone) to explode, or to destroy (something) or maim or kill (someone) by means of an explosion.

   “More civilians than soldiers have been blown up by anti-personnel mines.”

3. To inflate or fill with air, either by literally blowing or using an air pump.

   “For the school science project, each student will blow up a balloon and then tie it closed.”