deck

deck — noun

1. a flat, open surface on a boat or ship where people can walk, stand, or sit whil

1.nounA2
Definition

a flat, open surface on a boat or ship where people can walk, stand, or sit while outside.

Example

Nellie stood at the railing of the deck and watched the sunset over the harbour.

preposition phrase: at the railing of the deck

The crew mopped the wooden deck every morning before the passengers came out.

collocation: mop the deck

Common collocations
  • upper deck
  • lower deck
  • main deck
  • on deck
  • deck railing
  • mop the deck
Synonyms
  • platform

    more general; not specific to ships

Grammar Patterns

the deck

on deck

deck of [ship]

Usage Note

Frequently used with location prepositions: 'on deck' (outside on the platform), 'below deck(s)' (inside the ship).

2. one of the passenger levels on a bus that has two floors.

2.nounA2
Definition

one of the passenger levels on a bus that has two floors.

Example

Tamar sat up on the top deck and enjoyed the view of the city streets.

collocation: top deck + of the bus

The lower deck of the double-decker bus has space for pushchairs and luggage.

Common collocations
  • top deck
  • lower deck
  • double-decker bus
Synonyms
  • level

    more general, less specific to the bus context

Grammar Patterns

top/bottom/lower/upper deck

Usage Note

This sense is most common with 'double-decker' buses in the UK. North American English typically uses 'upper level' or 'lower level' instead.

Common Mistakes

I sat on the second floor of the bus.
I sat on the top deck of the bus.
'deck' is the standard word for bus levels, not 'floor'.

3. a raised outdoor wooden platform built against a house, used for sitting, dining

3.nounB1
Definition

a raised outdoor wooden platform built against a house, used for sitting, dining, or relaxing.

Example

Élise's parents built a wooden deck behind the house for summer barbecues.

collocation: build a deck

After dinner, the family took their drinks out to the deck and watched the stars.

preposition phrase: out to the deck

Common collocations
  • wooden deck
  • build a deck
  • deck furniture
  • deck chair
Synonyms
  • patio

    a paved area at ground level rather than a raised wooden platform

Grammar Patterns

build a deck

on the deck

wooden deck

Usage Note

In North America, 'deck' usually refers to a raised wooden structure. A 'patio' is a paved ground-level area — the two are not interchangeable.

Common Mistakes

We ate lunch on the patio' (when it is a raised wooden platform).
We ate lunch on the deck.
a deck is raised and wooden; a patio is at ground level and paved.

4. a floor or level inside a ship, especially one that is partly or fully below the

4.nounB1
Definition

a floor or level inside a ship, especially one that is partly or fully below the main outside platform.

Example

The ship's dining room is on Deck Three, next to the kitchen and storage rooms.

usage: Deck + number (capitalised)

The crew members sleep in small cabins on the lower deck near the engine room.

collocation: lower deck

Common collocations
  • below deck
  • lower deck
  • cabin deck
  • Deck [number]

Grammar Patterns

lower deck

below deck(s)

deck [number]

Usage Note

Distinguish from sense 1 (BOAT PLATFORM): sense 1 is the open outdoor surface; sense 4 is the interior levels of a ship. 'Below deck(s)' functions as an adverb meaning 'inside the ship, not on the open platform.'

5. a collection of 52 cards divided into four suits, from hearts to spades, that pe

5.nounA2
Definition

a collection of 52 cards divided into four suits, from hearts to spades, that people use to play games like poker or bridge.

Example

Shirin shuffled the deck and dealt five cards to each player around the table.

collocation: shuffle the deck

A standard deck has four suits: hearts, diamonds, clubs, and spades.

Common collocations
  • deck of cards
  • shuffle the deck
  • a new deck
Synonyms
  • pack

    more common in British English for a set of cards

Grammar Patterns

a deck of cards

shuffle the deck

a deck of 52

Usage Note

In British English, 'pack of cards' is more common than 'deck of cards', though both are understood. 'Deck' is dominant in North American English.

6. a group of slides prepared using software, shown one after another during a talk

6.nounB2
Definition

a group of slides prepared using software, shown one after another during a talk or meeting.

Example

Christopher prepared a deck of twelve slides for his sales presentation to the board.

collocation: a deck of ... slides

The consultant sent her slide deck to the client the day before the morning meeting.

collocation: slide deck

Common collocations
  • slide deck
  • presentation deck
  • deck of slides
Synonyms
  • slides

    shorter and very common in the same context

Grammar Patterns

a deck of slides

slide deck

presentation deck

Usage Note

This is modern business jargon, used informally and semi-formally in workplace settings. 'Slide deck' is more common than just 'deck' alone.

7. a component in an audio setup designed to play or record sound from discs, casse

7.nounB2
Definition

a component in an audio setup designed to play or record sound from discs, cassettes, or tapes.

Example

Ari inserted the cassette into the deck and pressed the play button gently.

collocation: [cassette] + deck

The old tape deck in the corner still works, though the sound is a little crackly.

collocation: tape deck

Common collocations
  • tape deck
  • cassette deck
  • CD deck

Grammar Patterns

tape deck

cassette deck

CD deck

Usage Note

Increasingly historical — most common in 'tape deck' (cassette player) or 'CD deck' (CD player component). Modern music systems rarely use the term.

Idioms

all hands on deck

idiom

a call for everyone to help with a task, especially when there is a lot of urgent work to do or a difficult situation to manage.

With the deadline only two days away, it was all hands on deck at the publishing office.

clear the decks

idiom

to remove all unnecessary objects or tasks so that you can focus on something important that is about to happen.

The team cleared the decks of old paperwork before starting the new project.

hit the deck

idiom

to drop quickly to the ground, either to avoid danger or as a sudden movement.

When the firework made a loud bang, the children hit the deck and covered their ears.

deck — verb

Word family

  • decked
    adjectiveB2
  • decking
    nounB2
  • deckhand
    nounC1

Synonym discussion

Sense: noun/1

'Deck' (noun/1, BOAT PLATFORM) refers specifically to the outdoor walking surface on a ship or boat. 'Platform' is a much broader term that can describe any raised, level surface — a train platform, an oil rig platform, or a speaker's platform — and lacks the nautical association. 'Porch' is a roofed structure attached to the entrance of a house, not a ship, and is typically smaller and covered. 'Patio' is a paved ground-level area behind a house, whereas a deck is raised and usually made of wood. On a boat, only 'deck' is correct; 'porch' and 'patio' would sound absurd. In a house context, 'deck' (noun/3) and 'patio' are near opposites in construction (raised wood vs. ground-level stone).

deck ↗platform ↗porch ↗patio

Common collocations

Adverbs

Phrases

Prepositions

Etymology

Middle DutchDutchEnglish

The word 'deck' comes from Middle Dutch 'dec', meaning a roof or covering. It entered English in the 1400s as a nautical term for the covering or platform of a ship. By the 1500s it had expanded to mean a pack of playing cards (perhaps from the idea of stacking cards like layers on a ship). The verb sense 'to decorate' also comes from Dutch 'dekken', meaning to cover or adorn, while the verb sense 'to knock down' is a separate American English development from the early 1900s, probably from the idea of flooring someone — bringing them down to the deck.