The Collaborative International Dictionary of English v.0.48:

Tooth \Tooth\, v. t. [imp. & p. p. Toothed; p. pr. & vb. n.
   Toothing.]
   1. To furnish with teeth.
      [1913 Webster]

            The twin cards toothed with glittering wire.
                                                  --Wordsworth.
      [1913 Webster]

   2. To indent; to jag; as, to tooth a saw.
      [1913 Webster]

   3. To lock into each other. See Tooth, n., 4. --Moxon.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Toothed \Toothed\, a.
   1. Having teeth; furnished with teeth. "Ruby-lipped and
      toothed with pearl." --Herrick.
      [1913 Webster]

   2. (Bot. & Zool.) Having marginal projecting points; dentate.
      [1913 Webster]

   Toothed whale (Zool.), any whale of the order Denticete.
      See Denticete.

   Toothed wheel, a wheel with teeth or projections cut or set
      on its edge or circumference, for transmitting motion by
      their action on the engaging teeth of another wheel.
      [1913 Webster]

WordNet (r) 3.0 (2006):

toothed
    adj 1: having teeth especially of a certain number or type;
           often used in combination; "saw-toothed" [ant:
           toothless]
    2: notched like a saw with teeth pointing toward the apex [syn:
       serrate, serrated, saw-toothed, toothed, notched]
    3: having an irregularly notched or toothed margin as though
       gnawed [syn: erose, jagged, jaggy, notched,
       toothed]

Moby Thesaurus II by Grady Ward, 1.0:

78 Moby Thesaurus words for "toothed":
   acanthoid, acanthous, acicular, acuate, aculeate, aculeiform,
   acuminate, acute, barbed, battlemented, bicuspid, chopped, clawed,
   cornuted, crenate, crenated, crenellated, crenulate, cusped,
   cuspidate, dental, dentate, dentated, dentiform, dentoid, digital,
   digitate, digitated, embrasured, erose, fanged, fingered, gashed,
   hispid, horned, horny, incised, indented, jagged, jaggy, jawed,
   lacerate, lacerated, molar, mucronate, needle-pointed,
   needle-sharp, nicked, notched, odontoid, pointed, prehensile,
   pronged, raptorial, saw-toothed, sawlike, scalloped, scored,
   serrate, serrated, serrulated, sharp-pointed, snaggle-toothed,
   snaggled, spiculate, spiked, spiky, spined, spinous, spiny,
   taloned, tapered, tapering, tined, toothlike, toothy, tusked,
   unbated