noun
Definition: A device worn on the back that uses jets to propel a person into the air, allowing them to fly or hover.
Example: The inventor demonstrated his new jetpack at the technology expo, impressing everyone with its ability to lift off the ground.
verb
Definition: To travel using a device that propels a person into the air, typically worn on the back.
Example: He decided to jetpack over the city to see the sights from above.