1. Literally, to pierce or cut into someone or something. I sliced into the roast pork to check if it was done cooking. A piece of broken glass sliced into me when I was walking across the sand.

2. Of a surgeon, to operate on someone. They said they could correct the issue with a minor surgery, but I am absolutely terrified of letting someone slice into me. The doctors are going to have to slice into him and put a stent into his heart.

3. To illicit a very sharp, arresting physical or emotional reaction in someone. The freezing cold water sliced into me as I jumped in up to my waist. Her eyes sliced into him from across the room, and he was unable to look away or think about anything, or anyone, else..