screw-shaped

His foot fell through the faulty grate and onto the screw-shaped blades, severing his leg below the knee.

Ice cubes fall from the ceiling into a huge mound; they then slide through turning screw-shaped blades that break up the ice and feed the cubes into the factory.

The screw-shaped shell keeps force directed at large rings while the soft body stays within the smaller rings.

Vibrio, vib′rī-ō, n. a name given with much laxity to various kinds of more or less screw-shaped Bacteria—also to small nematoid worms, such as cause ear-cockles in wheat.—n.

According to lore, Archimedes created a device with a revolving screw-shaped blade to pump water against gravity: the Archimedes screw.