Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun shelf

2 senses of shelf

Sense 1
shelf -- (a support that consists of a horizontal surface for holding objects)
       => support -- (any device that bears the weight of another thing; "there was no place to attach supports for a shelf")

Sense 2
ledge, shelf -- (a projecting ridge on a mountain or submerged under water)
       => ridge -- (a long narrow natural elevation or striation)