An attractive marine gastropod shell of the genus Harpa, found in tropical seas.

A steel suitable for shears, scythes, and other cutting instruments, prepared from fagots of blistered steel by repeated heating, rolling, and tilting, to increase its malleability and fineness of texture.

A curtain in a mine gallery to direct air currents and prevent accumulation of gas.

(military) A shell containing no charge, or one that does not explode.

A sea urchin.

The flat plate which forms the top of the furnace or firebox of an internally fired steam boiler.

The plant shepherd's purse.

lime made by burning the shells of shellfish

A short jacket reaching the hips, once part of military uniforms. / The jacket of a shell suit.

Kalmia angustifolia, a shrub in the family Ericaceae, with pink flowers.