Slang A situation or an activity that one enjoys or to which one is especially well suited: found his groove playing bass in a trio. A long narrow furrow or channel. The spiral track cut into a phonograph record for the stylus to follow. Slang A settled routine: got into the groove of a nine-to-five job. Slang A very pleasurable experience. To cut a groove or grooves in. Baseball To throw (a pitch) over the middle of home plate, where it is likely to be hit. To take great pleasure or satisfaction; enjoy oneself: just sitting around, grooving on the music. To be affected with pleasurable excitement. Slang To react or interact harmoniously. in the groove Slang Performing exceptionally well.