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

plural of Halimeda sand

(construction) A mixture of fine-grained sand and binding additives, used to fill the space between pavers.

(electronics, historical) An unspillable electrochemical battery whose cells use electrolyte soaked sand – typically used to test telegraph cables at sea.

plural of sand battery

plural of sand spit

plural of sand gazelle

A windlass used in working a sand pump.

A long cylinder with valved piston for use in drilling rocks.

plural of sand reel