v.1. To break or smash a hole in something: The robber bashed in the window with a crowbar. When I slipped, I fell against the door and bashed it in.
2. To strike a strong blow to something, causing it to penetrate a hard substance or surface: I didn't have a hammer, so I placed the nail over the wood and bashed it in with a wrench.
3. To make some indentation or hole in something by hitting it suddenly: I was so angry that I kicked the car and bashed a dent in it.