shelf ice noun

Ice extending from the land out to sea

shelf life noun

The length of time a product can be stored without deterioration occurring

shelf mark noun

An indication on a book of its place in a library

shelfˈroom noun

Space or accommodation on shelves

shelfˈtalker noun

A marketing device, eg a notice or mini-poster, attached to a shelf in a shop, to promote a specific product

off the shelf

1. Immediately available, in stock
2. (of a company) registered only in order to be sold

on the shelf

1. No longer useful
2. No longer likely to have the opportunity to marry
3. Removed from further prospect of employment