Definition of groove:
a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)
a settled and monotonous routine that is hard to escape; "they fell into a conversational rut"
(anatomy) any furrow or channel on a bodily structure or part
make a groove in, or provide with a groove; "groove a vinyl record"
hollow out in the form of a furrow or groove; "furrow soil"