(idiomatic) Laid aside, unused, abandoned. / (idiomatic, especially of a woman) Unmarried, typically through lack of interest from potential spouses. / (idiomatic, sports) Injured.

Enough to fill a shelf.

plural of shelfful

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. / The capacity of such an object

(meteorology) A low, horizontal cloud typically forming at the leading edge of thunderstorm outflow. An arcus type cloud often found along squall lines.

plural of shelf life

plural of shelf cloud

A printed card affixed to a supermarket or store shelf to draw customers' attention to a specific product.

(Canada, ice hockey) The upper part of the goal.

(US, idiomatic) Best, or high quality. / (Britain, idiomatic) Describing books, magazines, or movies that have adult content or softcore pornography.