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.]