1. noun Not something difficult to handle or deal with; not a problem or difficulty. A shortening of "no problem." The repair should be no prob—just replace the belt and that's it.
2. expression That is not a problem; don't worry about it. A: "It looks like the file was deleted when the computer crashed." B: "No prob, there should be a backup copy."
3. expression I would be happy to. A: "Would you mind emptying the dishwasher for me?" B: "Sure, no prob."
See No problem