From The Collaborative International Dictionary of English v.0.48:
Park \Park\, v. t. [imp. & p. p. Parked; p. pr. & vb. n. Parking.] 1. To inclose in a park, or as in a park. [1913 Webster]
How are we parked, and bounded in a pale. --Shak. [1913 Webster]
2. (Mil.) To bring together in a park, or compact body; as, to park artillery, wagons, automobiles, etc. [Webster 1913 Suppl.]
3. In oyster culture, to inclose in a park. [Webster 1913 Suppl.]
4. To bring (a vehicle) to a stop and leave it standing; -- typically a parked vehicle is off of the public road, the motor is not running, and the driver has left the vehicle.
Note: a vehicle stopped but still running with the driver in it is said to be standing. parallel-park [PJC]
5. To place (an object) in a temporary location; as, to park oneself on the couch; to park one's money in a mutual fund. [informal] [PJC]
From The Collaborative International Dictionary of English v.0.48:
parking \parking\ n. The act of maneuvering a vehicle into a location where it can be left temporarily. [WordNet 1.5]
2. A space or spaces in which a vehicle can be parked; as, there is plenty of parking behind the store. [WordNet 1.5]