The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

   2. Hence: The habitual course of life, work, or affairs;
      fixed routine.
      [1913 Webster]

            The gregarious trifling of life in the social
            groove.                               --J. Morley.
      [1913 Webster]

   3. [See Grove.] (Mining) A shaft or excavation. [Prov.
      Eng.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

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