shelf
noun /ʃelf/
  /ʃelf/
(plural shelves 
Idioms  /ʃelvz/
  /ʃelvz/
)
enlarge imagea flat board, made of wood, metal, glass, etc., fixed to the wall or forming part of a cupboard, bookcase, etc., for things to be placed on- I helped him put up some shelves in his bedroom.
 - on a shelf The book I wanted was on the top shelf.
 - supermarket shelves
 - (North American English) store shelves
 - The product should hit store shelves by August.
 - library shelves
 - empty shelves
 - the powerful retailers who control what products get shelf space
 
Collocations Decorating and home improvementDecorating and home improvementHouses- refurbish/renovate/ (British English) do up a building/a house
 - convert a building/house/room into homes/offices/(especially North American English) apartments/(British English) flats
 - extend/enlarge a house/building/room/kitchen
 - build (British English) an extension (to the back/rear of a house)/(North American English) an addition (on/to something)/(British English) a conservatory
 - knock down/demolish a house/home/building/wall
 - knock out/through the wall separating two rooms
 
- furnish/paint/ (especially British English) decorate a home/a house/an apartment/a flat/a room
 - be decorated in bright colours/in a traditional style/with flowers/with paintings
 - paint/plaster the walls/ceiling
 - hang/put up/strip off/remove the wallpaper
 - install/replace/remove the bathroom fixtures/(British English) fittings
 - build/put up shelves
 - lay wooden flooring/timber decking/floor tiles/a carpet/a patio
 - put up/hang/take down a picture/painting/poster/curtain
 
- do (British English) DIY/carpentry/the plumbing/the wiring
 - make home improvements
 - add/install central heating/underfloor heating/insulation
 - fit/install double-glazing/a smoke alarm
 - insulate your house/your home/the walls/the pipes/the tanks/(especially British English) the loft
 - fix/repair a roof/a leak/a pipe/the plumbing/a leaking (especially British English) tap/(North American English usually) faucet
 - block/clog (up)/unblock/unclog a pipe/sink
 - make/drill/fill a hole
 - hammer (in)/pull out/remove a nail
 - tighten/untighten/loosen/remove a screw
 - saw/cut/treat/stain/varnish/paint wood
 
Collocations ShoppingShoppingShoppingsee also top-shelf- go/go out/be out shopping
 - go to (especially British English) the shops/(especially North American English) a store/(especially North American English) the mall
 - do (British English) the shopping/(especially North American English) the grocery shopping/a bit of window-shopping
 - (North American English, informal) hit/hang out at the mall
 - try on clothes/shoes
 - indulge in some retail therapy
 - go on a spending spree
 - cut/cut back on/reduce your spending
 - be/get caught shoplifting
 - donate something to/take something to/find something in (British English) a charity shop/(North American English) a thrift store
 - buy/sell/find something at (British English) a car boot sale/(British English) a jumble sale/a garage sale/(North American English) a yard sale
 - find/get/pick up a bargain
 
- load/push/wheel (British English) a trolley/(North American English) a cart
 - stand in/wait in (British English) the checkout queue/(North American English) the checkout line
 - (North American English) stand in line/ (British English) queue at the checkout
 - bag (especially North American English) (your) groceries
 - pack (away) (especially British English) your shopping
 - stack/stock/restock the shelves at a store (with something)
 - be (found) on/appear on supermarket/shop shelves
 - be in/have in/be out of/run out of stock
 - deal with/help/serve customers
 - run a special promotion
 - be on special offer
 
- make/complete a purchase
 - buy/purchase something online/by mail order
 - make/place/take an order for something
 - buy/order something in bulk/in advance
 - accept/take credit cards
 - pay (in) cash/by (credit/debit) card/(British English) with a gift voucher/(North American English) with a gift certificate
 - enter your PIN number
 - ask for/get/obtain a receipt
 - return/exchange an item/a product
 - be entitled to/ask for/demand a refund
 - compare prices
 - offer (somebody)/give (somebody)/get/receive a 30% discount
 
Extra ExamplesTopics Houses and homesb1, Shoppingb1- He's got a job stocking shelves in a supermarket.
 - Her diaries just sat on the shelf for years.
 - Hundreds of books lined the shelves.
 - I knocked it off the shelf by accident.
 - I put the box back on the shelf.
 - I've cleared a shelf in the bedroom for you.
 - She scanned the shelves of the library for new books.
 - Shelves lined the walls behind the long counter.
 - Souvenirs filled the shelves.
 - The DVD is flying off the shelves (= selling very quickly).
 - The shelves were packed with dolls of every shape and size.
 - The supermarket immediately removed the product from its shelves.
 
Oxford Collocations Dictionaryadjective- high
 - low
 - deep
 - …
 
- have
 - build
 - put up
 - …
 
- be full of something
 - contain something
 - hold something
 - …
 
- space
 - life
 
- off a/the shelf
 - on a/the shelf
 - shelf of
 - …
 
- be filled with shelves
 - be lined with shelves
 - a place on your shelves
 - …
 
- (geology) a thing like a shelf in shape, especially a piece of rock sticking out from a cliff or from the edge of a mass of land under the sea                                     
 
Word OriginMiddle English: from Middle Low German schelf; related to Old English scylfe ‘partition’, scylf ‘crag’.
Idioms 
off the shelf 
- that can be bought immediately and does not have to be specially designed or ordered
- I bought this package off the shelf.
 - Some courses can be bought off the shelf as self-contained study packages.
 
 
on the shelf (informal)
- not wanted by anyone; not used
 - (old-fashioned) (especially of women) considered to be too old to get married
 
take something off the market/shelves 
- to stop something from being sold
- The slimming pills were taken off the market.
 - Thousands of egg products were taken off the shelves following the health scare.
 
 
