v.1. To engage in frivolous or idle activity; goof off: Stop playing around and get to work.
2. play around with To manipulate or work with something without a clear sense of method: We played around with the old television set, trying to see if we could make it work.
3. Slang To engage in romantic or sexual relations with someone; fool around: I think those two are playing around. Who is he playing around with now?