Screw definition, a metal fastener having a tapered shank with a helical thread, and topped with a slotted head, driven into wood or the like by rotating, especially by means of a screwdriver. See more. Screw definition is - a simple machine of the inclined plane type consisting of a spirally grooved solid cylinder and a correspondingly grooved hollow cylinder into which it fits. How to use screw in a sentence. A screw is a mechanism that converts rotational motion to linear motion, and a torque (rotational force) to a linear force. It is one of the six classical simple machines. heremon form consists of a cylindrical shaft with helical grooves or ridges called threads around the outside.

cap screw - a threaded screw for machine parts; screws into a tapped hole fastening , holdfast , fastener , fixing - restraint that attaches to something or holds something in place head - a projection out from one end; the head of the nail, a pinhead is the head of a pin screw definition: 1. a thin, pointed piece of metal with a raised edge twisting round along its length and a flat top with a cut in it, used to join things together, especially pieces of wood 2. an act of twisting or turning done to fasten or tighten something: 3. screw definition: The definition of a screw is a piece of metal with a threaded surface and a point on one end and a slotted head that is twisted hererate and fasten two things together. (noun)

A screw is a type of hardware fastener that attributes its mechanical capabilities to the helical groove that extends around the circumference of the device's shank.