In casual English, you can sometimes use the word "grab" to mean "get". It means that you want someone to get it and bring it to you.
Here are some other examples of "grab" used in this way:
Jason, go grab your sister. I need her help with this.
Use "from ___" to tell where the thing that's being grabbed is:
Can you grab my screwdriver from the drawer in the basement?
One other point: "grabbing" something means that you get it quickly. If it's going to take a long time to get something, don't use the word "grab".