plural of Archimedean screw

(engineering) A screwlike device invented by Greek mathematician Archimedes, ca. 200 B.C.E., which when twisted inside a cylinder, raises water from a lower level to a higher level, allowing irrigation of fields.

A breech pin.

plural of breech screw

(idiomatic) To increase the pressure of a situation.

A machine for the manufacture of screws, typically either by carving a groove into a thick nail, or by welding a thread formed of wire to a thin nail.

(idiomatic) To apply pressure.

plural of set screw

(engineering) A screw for adjusting the distance between the stones in a grinding mill by raising or lowering the bridgetree.

plural of lighter screw