1. To collide with and break through something with great, violent force. The suspect smashed through the police barrier in a stolen SUV. I nearly lost my life from fright when a bird came smashing through our living room window.

2. To cause someone or something to collide with and break through something with great, violent force. In this usage, a noun or pronoun is used between "smash" and "through." Someone smashed a rock through my windscreen while we were in the movie theater! The pro wrestler picked up his opponent and smashed him through the wooden table on the ground outside the ring.