Salivate (verb)

1. To produce saliva in the mouth as a reflex, especially in response to the sight or smell of food.
2. To feel an eager or impatient desire for something.

Origin:

The word "salivate" comes from the latin word "salivare" which means "to produce saliva". it has been in use since the late 17th century.

Examples:

1. The smell of the freshly baked bread made him salivate.
2. The dog salivated heavily when its owner opened the can of dog food.
3. The mere thought of a slice of chocolate cake was enough to make her salivate.
4. The children salivated at the thought of going to the amusement park.
5. The opportunity to lead the project made him salivate as he had been waiting for this chance for a long time.