shelf
noun [ C ]
uk/ʃelf/ uk/ʃelvz/ usplural shelvesa long flat board fixed horizontally, for example against a wall or inside a cupboard, on which objects are stored or shown for sale:
In another room, stacked on every available shelf are four to five hundred large storage boxes.
Supermarket shelves are filled with cheap, mass-produced food that is packed with calories.
fill/refill the shelves
stock/restock the shelves
The manufacturer has asked retailers to remove the product from the shelves.
off the shelf
COMMERCE, MARKETING
if a product can be bought off the shelf, it does not need to be specially made or requested:
It's often cheaper if you buy wallpaper off the shelf, rather than having to order it.
The electronic components needed to make the sensors were easily available off the shelf.