Ruler on a golf course?

• Leaving (a car) somewhere
• A lot of spaces?
• Place temporarily

Wikipedia Word definitions in Wikipedia
Parking is the act of stopping a vehicle and leaving it unoccupied for more than a brief time. Parking may also refer to: Entertainment Free Parking , a card game loosely based on Monopoly The Parking Space (Seinfeld episode) Film Parking (1985 film) , ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"act of putting (a vehicle) in a certain place," 1915, verbal noun from park (v.). Parking lot is from 1920; parking ticket attested by 1925. Parking brake recorded from 1929.

WordNet Word definitions in WordNet
n. space in which vehicles can be parked; "there is plenty of parking behind the store" the act of maneuvering a vehicle into a location where it can be left temporarily

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
parking \parking\ n. The act of maneuvering a vehicle into a location where it can be left temporarily. 2. A space or spaces in which a vehicle can be parked; as, there is plenty of parking behind the store.