[1] : The Collaborative International Dictionary of English v.0.48

tooth \tooth\ t=ooth, n.; pl. teeth t=eth. oe.
   toth,tooth, as. t=oeth; akin to ofries. t=oth, os.  d.
   tand, ohg. zang, zan, g. zahn, icel. t"onn, sw.  dan.
   tand, goth. tumpus, lith. dantis, w. dant, l. dens, dentis,
   gr. 'odoy`s, 'odo`ntos, skr. danta; probably originally the
   p. pr. of the verb to eat. root239. cf. eat, dandelion,
   dent the tooth of a wheel, dental, dentist, indent,
   tine of a fork, tusk. 
   1. anat. one of the hard, bony appendages which are borne
      on the jaws, or on other bones in the walls of the mouth
      or pharynx of most vertebrates, and which usually aid in
      the prehension and mastication of food.
      1913 webster

   note: the hard parts of teeth are principally made up of
         dentine, or ivory, and a very hard substance called
         enamel. these are variously combined in different
         animals. each tooth consist of three parts, a crown, or
         body, projecting above the gum, one or more fangs
         imbedded in the jaw, and the neck, or intermediate
         part. in some animals one or more of the teeth are
         modified into tusks which project from the mouth, as in
         both sexes of the elephant and of the walrus, and in
         the male narwhal.
         in adult man there are thirty-two teeth, composed
         largely of dentine, but the crowns are covered with
         enamel, and the fangs with a layer of bone called
         cementum. of the eight teeth on each half of each jaw,
         the two in front are incisors, then come one canine,
         cuspid, or dog tooth, two bicuspids, or false molars,
         and three molars, or grinding teeth. the milk, or
         temporary, teeth are only twenty in number, there being
         two incisors, one canine, and two molars on each half
         of each jaw. the last molars, or wisdom teeth, usually
         appear long after the others, and occasionally do not
         appear above the jaw at all.
         1913 webster

               how sharper than a serpent's tooth it is
               to have a thankless child         --shak.
         1913 webster

   2. fig.: taste; palate.
      1913 webster

            these are not dishes for thy dainty tooth. --dryden.
      1913 webster

   3. any projection corresponding to the tooth of an animal, in
      shape, position, or office; as, the teeth, or cogs, of a
      cogwheel; a tooth, prong, or tine, of a fork; a tooth, or
      the teeth, of a rake, a saw, a file, a card.
      1913 webster

   4.
      a a projecting member resembling a tenon, but fitting
          into a mortise that is only sunk, not pierced through.
      b one of several steps, or offsets, in a tusk. see
          tusk.
          1913 webster
          1913 webster

   5. nat. hist. an angular or prominence on any edge; as, a
      tooth on the scale of a fish, or on a leaf of a plant;
      specifically bot., one of the appendages at the mouth of
      the capsule of a moss. see peristome.
      1913 webster

   6. zool. any hard calcareous or chitinous organ found in
      the mouth of various invertebrates and used in feeding or
      procuring food; as, the teeth of a mollusk or a starfish.
      1913 webster

   in spite of the teeth, in defiance of opposition; in
      opposition to every effort.

   in the teeth, directly; in direct opposition; in front.
      "nor strive with all the tempest in my teeth." --pope.

   to cast in the teeth, to report reproachfully; to taunt or
      insult one with.

   tooth and nail, as if by biting and scratching; with one's
      utmost power; by all possible means. --l'estrange. "i
      shall fight tooth and nail for international copyright."
      --charles reade.

   tooth coralline zool., any sertularian hydroid.

   tooth edge, the sensation excited in the teeth by grating
      sounds, and by the touch of certain substances, as keen
      acids.

   tooth key, an instrument used to extract teeth by a motion
      resembling that of turning a key.

   tooth net, a large fishing net anchored. scot.
      --jamieson.

   tooth ornament. arch. same as dogtooth, n., 2.

   tooth powder, a powder for cleaning the teeth; a
      dentifrice.

   tooth rash. med. see red-gum, 1.

   to show the teeth, to threaten. "when the law shows her
      teeth, but dares not bite." --young.

   to the teeth, in open opposition; directly to one's face.
      "that i shall live, and tell him to his teeth ." --shak.
      1913 webster
see also:
teeth eat dandelion dent dental dentist 
indent tine tusk peristome in spite of the teeth 
in the teeth to cast in the teeth tooth and nail tooth coralline tooth edge 
tooth key tooth net tooth ornament dogtooth tooth powder 
tooth rash red-gum to show the teeth to the teeth 

[2] : 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
see also:
toothed toothing tooth 

[3] : WordNet (r) 2.0

tooth
     n 1: hard bonelike structures in the jaws of vertebrates; used
          for biting and chewing or for attack and defense
     2: something resembling the tooth of an animal
     3: toothlike structure in invertebrates found in the mouth or
        alimentary canal or on a shell
     4: a means of enforcement; "the treaty had no teeth in it"
     5: one of a number of uniform projections on a gear
     also: teeth pl
see also:
teeth 

[4] : Moby Thesaurus II by Grady Ward, 1.0

118 moby thesaurus words for "tooth":
   vandyke, aftertaste, asperity, baby tooth, bicuspid, bitter, blaze,
   bucktooth, bumpiness, canine, chop, choppiness, coarsen, cog, comb,
   crag, cragginess, crenellate, crenulate, crimp, crown, cuspid, cut,
   cutter, deciduous tooth, dent, denticle, denticulation, dentil,
   dentition, dogtooth, eyetooth, fang, flavor, fore tooth, gagtooth,
   gang tooth, gash, gold tooth, grain, granulate, granulation,
   grinder, gust, harrow, harshness, hispidity, incise, incisor,
   indent, inequality, irregularity, jag, jaggedness, joltiness,
   knurl, machicolate, milk tooth, mill, molar, nick, nonuniformity,
   notch, palate, peak, pecten, peg, permanent tooth, picot, pink,
   pivot tooth, premolar, projection, raggedness, rake, ratchet,
   relish, rough air, roughen, roughness, ruggedness, rugosity, salt,
   sapidity, sapor, savor, savoriness, sawtooth, scallop, scarify,
   score, scotch, scraggliness, scrivello, serrate, slash, smack,
   smooth, snag, snaggle, snaggletooth, sour, spire, sprocket, spur,
   steeple, stomach, sweet, tang, taste, tongue, turbulence, tush,
   tusk, unevenness, unsmoothness, ununiformity, wisdom tooth

[5] : Easton's 1897 Bible Dictionary

tooth
   one of the particulars regarding which retaliatory punishment
   was to be inflicted ex. 21:24; lev. 24:20; deut. 19:21.
   "gnashing of teeth" =rage, despair matt. 8:12; acts 7:54;
   "cleanness of teeth" =famine amos 4:6; "children's teeth set
   on edge" =children suffering for the sins of their fathers
   ezek. 18:2.
   

Tooth >> T Words
Tooth, definition of term: Tooth
tooth_pag1.html

Tooth Root >> T Words
Tooth Root, definition of term: Tooth Root
tooth+root_pag1.html

Tooth Rash >> T Words
Tooth Rash, definition of term: Tooth Rash
tooth+rash_pag1.html

Tooth Decay >> T Words
Tooth Decay, definition of term: Tooth Decay
tooth+decay_pag1.html

Wisdom Tooth >> W Words
Wisdom Tooth, definition of term: Wisdom Tooth
wisdom+tooth_pag1.html

Sweet Tooth >> S Words
Sweet Tooth, definition of term: Sweet Tooth
sweet+tooth_pag1.html