parking deckn. a floor of a building used as a parking place for vehicles; (also) a multi-storey car park.
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society > travel > transport > transport or conveyance in a vehicle > vehicular traffic > [noun] > a parking place > area where caravans may be parked > floor of a building
parking deck1955
1955 Times 16 Sept. 13/6 They are planning to introduce a parking deck for over 100 cars.
1998 Indianapolis Star 18 Sept. a16 (advt.) The Castleton store has been expanded..and a new parking deck has been constructed adding 275 spaces.