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:

grooved \grooved\ adj.
   1. [p. p. groove] having grooves; as, a record is a grooved
      disk.
      [WordNet 1.5]

   2. marked by thin parallel marks or channels.

   Syn: canaliculate.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

grooved
    adj 1: established as if settled into a groove or rut [syn:
           grooved, well-grooved]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "grooved":
   canaliculate, canaliculated, carved, chamfered, channeled,
   corduroy, corduroyed, corrugate, corrugated, costate, creased,
   crimped, cut, dadoed, enchased, engraved, fluted, furrowed, gashed,
   glyphic, goffered, gouged, graved, graven, impressed, imprinted,
   incised, inscribed, insculptured, lined, marked, pleated, printed,
   rabbeted, ribbed, rifled, rutted, rutty, scored, scratched,
   sculptured, slit, stamped, striated, sulcate, sulcated, tooled,
   troughed, wrinkled