dog·tooth /ˈdɔgˌtuθ/
 犬齒,犬牙,犬牙飾


 Dog·tooth n.; pl. Dogteeth
 1. See Canine tooth, under Canine.
 2. Arch. An ornament common in Gothic architecture, consisting of pointed projections resembling teeth; -- also called tooth ornament.
 Dogtooth spar Min., a variety of calcite, in acute crystals, resembling the tooth of a dog. See Calcite.
 Dogtooth violet Bot., a small, bulbous herb of the Lily family (genus Erythronium). It has two shining flat leaves and commonly one large flower. [Written also dog's-tooth violet.]

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 dogtooth
      n 1: perennial woodland spring-flowering plant; widely cultivated
           [syn: dogtooth violet, dog's-tooth violet]
      2: one of the four pointed conical teeth (two in each jaw)
         located between the incisors and the premolars [syn: canine,
          canine tooth, eyetooth, eye tooth, cuspid]
      3: a carved pyramidal ornament; used in 13th century England
      [also: dogteeth (pl)]