plural of scorpion shell

A form of projectile for artillery.

plural of segment shell

plural of pulley shell

The casing of a pulley block.

A white earthy deposit resulting from the accumulation of fragments of shells.

plural of shell marl

(glaciology, oceanography) Ice which is no longer supported by the water beneath it, and instead has a cavity underneath.

(zoology) A univalve shell whose volutions run in the opposite direction to that of a standard screw thread. / (computing) An interactive command shell initiated from a remote computer.

plural of reverse shell