screwback

Noun

 * 1) The period of screw rotation during injection molding when the plastic can flow into the mold.
 * 2) A hook-shapped attachment for an earring that sits behind the earlobe and tightens with a screw. Also, an earring that uses this type of attachment.
 * 3) A mechanism for attaching a small item to clothing that operates by a post which goes through the cloth and a small backing plate that screws to the post. Also, the medal, tie pin, button, etc. that uses this type of attachment.
 * 4) A type of case for a pocket watch where the mechanism is accessed by a removable back plate that screws onto the back of the case. Also, a watch that has such a case.
 * 5)  The effect of putting backspin on the cue ball.
 * 6)  A powerful shot that imparts a spin to the ball.
 * 7)  A half-volley executed by holding the racket loosely and swinging it straight at the ball.
 * 8)  A masonry abutment on an arch that is wedge-shaped in order to transmit the thrust downward.
 * 9) An industrial digging machine that uses a large screw at the back to drill into the ground.
 * 10) A type of propeller in which the blades are angled to produce a motion similar to threading a screw. Also, the angle of the blades on such a propeller.
 * 11) A tightening screw on the back of a hand tool.
 * 1)  The effect of putting backspin on the cue ball.
 * 2)  A powerful shot that imparts a spin to the ball.
 * 3)  A half-volley executed by holding the racket loosely and swinging it straight at the ball.
 * 4)  A masonry abutment on an arch that is wedge-shaped in order to transmit the thrust downward.
 * 5) An industrial digging machine that uses a large screw at the back to drill into the ground.
 * 6) A type of propeller in which the blades are angled to produce a motion similar to threading a screw. Also, the angle of the blades on such a propeller.
 * 7) A tightening screw on the back of a hand tool.
 * 1) A type of propeller in which the blades are angled to produce a motion similar to threading a screw. Also, the angle of the blades on such a propeller.
 * 2) A tightening screw on the back of a hand tool.
 * 1) A tightening screw on the back of a hand tool.
 * 1) A tightening screw on the back of a hand tool.