(metalworking) Dry, non-adhesive sand sprinkled upon the partings of a mould to facilitate the separation.

Something of no cohesion or fiber; a feeble union or tie; something not to be relied upon.

Any of various plovers that winter on sandy beaches. The lesser sand plover is Charadrius mongolus; the greater sand plover is Charadrius leschenaultii.

plural of sand plover

(historical) A group of Native Americans who reside primarily in the Sonoran Desert of southeastern Arizona and northwestern Mexico, who are today known as the Hia C-ed O'odham; closely related to the Tohono O'odham.

plural of line in the sand

Any of various species of slim fish, resembling eels, especially of the family Ammodytidae.

Any of genus Ammophila of narrow-waisted hunting wasps, sometimes placed in Sphecidae. / Any of tribe Bembicini

An aggregate of sand, bentonite clay, pulverized coal, and water, used in making moulds for metal casting.

A piece of laboratory equipment consisting of a container filled with heated sand, that is used to provide an even source of heat. / A bath in which the body is immersed in hot sand.