| gear |
a part of a machine that causes another part to move because of teeth which connect the two moving parts. [1/4 definitions] |
| grin |
to smile broadly, so that the teeth are showing. [2 definitions] |
| gum2 |
(often plural) the flesh inside the mouth around the base of the teeth. |
| jaw |
either or both of the two bones that frame the mouth and hold the teeth. [1/3 definitions] |
| mouthpiece |
a rubber or plastic object worn inside the mouth to protect the teeth. [1/2 definitions] |
| orthodontics |
(used with a singular verb) the branch of dental medicine that deals with the straightening of teeth. |
| orthodontist |
a dentist who works in the branch of dental medicine that deals with the straightening of teeth. |
| pangolin |
a mammal that lives in Africa and Asia and feeds on ants and termites. Pangolins do not have teeth, and they roll into a ball to defend themselves when they are attacked. |
| plaque |
a film of bacteria and saliva that forms on teeth. [1/2 definitions] |
| porpoise |
a mammal that lives in the ocean. Porpoises look like large fish, but they breathe air. Some kinds of porpoises have a triangular fin on their back. Porpoises are closely related to dolphins and other whales with teeth. Porpoises have a round head with a blunt snout. [1/2 definitions] |
| rabbit |
a small mammal with long ears and long back legs for running or jumping. Rabbits have soft fur and a short tail. They are herbivores with long front teeth. Some kinds of rabbits make tunnels or burrows in the ground. Cottontails and hares are kinds of rabbits. |
| rake1 |
a tool that has a long handle and a row of teeth or prongs at one end. It is used to gather hay or fallen leaves or to smooth down soil. [1/4 definitions] |
| rodent |
a small mammal with long front teeth used for gnawing. Many kinds of rodents are found all over the world. Rodents include rats, mice, hamsters, porcupines, chinchillas, guinea pigs, squirrels, prairie dogs, gophers, woodchucks, and beavers. |
| saber-toothed tiger |
a large wild cat with very long teeth curving from its upper jaw. Saber-toothed tigers were carnivores that hunted the young of mammoths and other large animals. The last kinds of saber-toothed tigers became extinct over ten thousand years ago. Modern tigers are not related to saber-toothed tigers. |
| saw1 |
a tool with a thin metal blade that has sharp teeth along the edge. Saws are used for cutting hard materials such as wood or metal. [1/2 definitions] |
| shark1 |
a fish that lives in the ocean and has tough skin, large jaws and teeth, and a skeleton made of cartilage. Most sharks eat other fish. |
| sierra |
a chain of mountains with sharp peaks that look like the teeth of a saw. |
| snap |
to grab or try to grab something suddenly with the teeth (usually followed by "at"). [1/15 definitions] |
| snarl1 |
to growl and show teeth in a threatening or vicious way. [1/3 definitions] |
| sperm whale |
a very large mammal that lives in the ocean. Sperm whales dive very deeply and can hold their breath for over an hour. They are related to porpoises, dolphins, and other whales with teeth. Sperm whales are the largest toothed whale. |
| tartar |
a hard, yellow substance that forms on the teeth. |