1. To collide with someone or something, especially with a very sudden and forceful impact. Another driver ignored a red light and rammed into us in the middle of the intersection. He didn't see the dining room table and rammed right into it.

2. To cause something to collide with someone or something, especially with a great and sudden force. In this usage, a noun or pronoun is used between "ram" and "into." The toddler rammed the shopping cart into the man's thigh. The criminal rammed his car into the truck carrying the bank deposits.

3. To force something to penetrate or become lodged in something. In this usage, a noun or pronoun is used between "ram" and "into." He rammed a metal rod into the computer terminal in a fit of blind rage. The serial killer rammed the knife into the back of his latest victim.