Definition from Wiktionary, the free dictionary
Etymology 1 
deck (plural decks)
- Any flat surface that can be walked on: a balcony; a porch; a raised patio; a flat rooftop.
- A pack or set of playing cards.
- (nautical) The floorlike covering of the horizontal sections, or compartments, of a ship. Small vessels have only one deck; larger ships have two or three decks.
- Arr, maties! Swab the deck!
Derived terms 
any flat surface walked on
pack of playing cards
floorlike covering on a ship
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.
- (uncommon) To furnish with a deck, as a vessel.
- (slang) In a fight or brawl, to knock someone to the floor, especially with a single punch.
- Wow, did you see her deck that guy who pinched her?
(slang) to knock someone to the floor with a single punch
Etymology 2 
From Middle Dutch dekken (“to cover”).
- (transitive, with out) To dress (someone) up, to clothe with more than ordinary elegance
- (transitive, with out) To decorate (something).
Usage notes 
- See deck out
dress up — see dress up
decorate — see decorate
- IPA: [dɛk]
deck m (invariable)