Yes, rocket is a Scrabble word!

Verb

1. Shoot up abruptly, like a rocket

2. Propel with a rocket

Noun

1. Any vehicle self-propelled by a rocket engine

2. A jet engine containing its own propellant and driven by reaction propulsion

3. Erect European annual often grown as a salad crop to be harvested when young and tender

4. Propels bright light high in the sky, or used to propel a lifesaving line or harpoon

5. Sends a firework display high into the sky