Sentence:  Localities across New Jersey imposed curfews to prevent looting. In Monmouth, Ocean and other counties, people waited for hours for gasoline at the few stations that had electricity. Supermarket <WSD>shelves</WSD> were stripped bare. 
Meaning of the word marked with <WSD> tags:  A flat, rigid structure, fixed at right angles to a wall or forming a part of a cabinet, desk etc., and used to support, store or display objects.