Incisor (noun)

1. A type of tooth, located in the front of the mouth, that is used for biting and cutting food.
2. One of the four front teeth located in the upper or lower jaw.

Origin:

From latin incisus "cut into".

Examples:

1. The incisor was extracted due to decay.
2. He was missing his lower left incisor.
3. The incisors were the first to appear in the baby's mouth.
4. The incisors are the most visible teeth when smiling.
5. The incisors are important for biting and cutting food.