Tooth - Dictionary Definition and Overview

Tooth :  (noun)
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

Based on WordNet 2.0

Tooth : \Tooth\, n.; pl. Teeth. [OE. toth,tooth, AS. t[=o][eth]; akin to OFries. t[=o]th, OS. & D. tand, OHG. zang, zan, G. zahn, Icel. t["o]nn, 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. [root]239. 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.

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.

How sharper than a serpent's tooth it is To have a thankless child ! --Shak.

2. Fig.: Taste; palate.

These are not dishes for thy dainty tooth. --Dryden.

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.

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.

Based on Webster's Revised Unabridged Dictionary

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

The twin cards toothed with glittering wire. --Wordsworth.

2. To indent; to jag; as, to tooth a saw.

3. To lock into each other. See Tooth, n., 4. --Moxon.

Based on Webster's Revised Unabridged 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).



Based on Easton's 1897 Bible Dictionary [Bible_Dictionary]:

Tooth :  Tooth: The structures within the mouth that allow for biting and chewing. Teeth have different shapes, depending on their purpose. The sharp canine and frontal teeth allow for biting, while the flattened, thick molars in the back of the mouth provide grinding surfaces for masticating food. All teeth have essentially the same structure: a hard crown above the gum line, which is attached to two or four roots by a portion called the neck. The roots are covered with a very thin layer of bone, and keep the tooth embedded in the bones of the jaw. The exposed exterior of the tooth is covered with tough enamel. Under the enamel is a thick layer of dentin, and in the center is the pulp. Blood vessels and nerves are found within the pulp.



Based on Easton's 1897 Bible Dictionary [Bible_Dictionary]:
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