Source : Webster's Revised Unabridged Dictionary (1913)

Groove \Groove\, n. [D. groef, groeve; akin to E. grove. See
   {Grove}.]
   1. A furrow, channel, or long hollow, such as may be formed
      by cutting, molding, grinding, the wearing force of
      flowing water, or constant travel; a depressed way; a worn
      path; a rut.

   2. Hence: The habitual course of life, work, or affairs;
      fixed routine.

            The gregarious trifling of life in the social
            groove.                               --J. Morley.

   3. [See {Grove}.] (Mining) A shaft or excavation. [Prov.
      Eng.]

Groove \Groove\, v. t. [imp. & p. p. {Grooved}; p. pr. & vb. n.
   {Groving}.]
   To cut a groove or channel in; to form into channels or
   grooves; to furrow.

Source : WordNet®

groove
     n 1: 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) [syn: {channel}]
     2: a settled and monotonous routine that is hard to escape;
        "they fell into a conversational rut" [syn: {rut}]
     3: (anatomy) any furrow or channel on a bodily structure or
        part [syn: {vallecula}]

groove
     v 1: make a groove in, or provide with a groove; "groove a vinyl
          record"
     2: hollow out in the form of a furrow or groove; "furrow soil"
        [syn: {furrow}, {rut}]