v.1. To strike someone or something with force: The truck slid on the ice and plowed into a brick wall.
2. To cause something to strike someone or something with force: The driver plowed the SUV into the wall.
3. To undertake something, as a task, with eagerness and vigor: I went to the library and plowed into my research paper.
4. To invest some amount of money into something: The company plowed its excess cash into stocks. I just plowed $200,000 into a new house.