teeth teeth /ˈtiːθ/

noun

1. The kind and number and arrangement of teeth (collectively) in a person or animal  ( dentition , teeth )
   the kind and number and arrangement of teeth (collectively) in a person or animal
   
   

 tooth tooth /ˈtuːθ/

noun

1. () Hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense  ( tooth )
   hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense
    Brushing and flossing regularly can help keep your teeth healthy
   Brushing and flossing regularly can help keep your teeth healthy
   
   
2. () Something resembling the tooth of an animal  ( tooth )
   something resembling the tooth of an animal
   
3. () A means of enforcement  ( tooth )
   a means of enforcement
    The treaty had no teeth in it
   the treaty had no teeth in it
   
4. () Toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell  ( tooth )
   toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell
   
5. One of a number of uniform projections on a gear  ( tooth )
   one of a number of uniform projections on a gear
    The gear malfunctioned because one of its teeth was chipped.
   The gear malfunctioned because one of its teeth was chipped.