tooth \tōōth\ n, pl teeth \tēth\ (bef. 12c): any hard calcified structure in the alveolar processes of the maxilla or mandible used for mastication of food, or a similar structure—see Anatomic Teeth, Cuspless Teeth, Metal Insert Teeth, Nonanatomic Teeth, Reverse Articulation Teeth, Tube Teeth, Zero-Degree Teeth