As a verb:
* The child darted across the playground, laughing.
* The squirrel darted up the tree, avoiding the dog.
* The police car darted through the traffic, sirens blaring.
As a noun:
* The player threw a dart that hit the bullseye.
* He used a dart to tranquilize the animal.
* The archer aimed his dart at the target.
In a figurative sense:
* Her thoughts darted between hope and fear.
* My eyes darted around the room, looking for the missing key.
Let me know if you'd like to see more examples!