(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)
... most exquisitely fragrant. But the New Englander, when he talks of wild flowers, has in his eye something different from these. He is not thinking of any bush, no matter how beautiful, but of trailing arbutus, hepaticas, bloodroot, anemones, saxifrage, violets, dogtooth violets, spring beauties, "cowslips," buttercups, corydalis, columbine, Dutchman's breeches, clintonia, five-finger, and all the rest of that bright and fragrant host which, ever since he can remember, he has seen covering his native hills and ... — A Florida Sketch-Book • Bradford Torrey