Sand coated with polydimethylsiloxane so that it never dries out, used as a plaything for its unusual physical properties.

A calcareous sediment composed of the remains of the tissues of Halimeda algae.

a fish, Sillago ciliata, found in tidal waters off Australia

Any echinoderm of the order Clypeasteroida, having a flat, disk-shaped body with the mouth in a mid-ventral position, and living in sand, on or near the surface.

a migratory passerine bird in the swallow family.

(derogatory, offensive, ethnic slur) A person of Middle Eastern or North African descent. / (derogatory, offensive, religious slur) A Muslim.

plural of sand cat

(geology) oil sand

Oil sand.

A relatively loose sandstone, or porous carbonate rock, impregnated with bitumen.