Yes, park is a Scrabble word!

Verb

1. Place temporarily

2. Maneuver a vehicle into a parking space

Noun

1. A large area of land preserved in its natural state as public property

2. A piece of open land for recreational use in an urban area

3. A facility in which ball games are played (especially baseball games)

4. Scottish explorer in Africa (1771-1806)

5. A lot where cars are parked

6. A gear position that acts as a parking brake