noun The period of screw rotation during injection molding when the plastic can flow into the mold.
noun A hook-shaped attachment for an earring that sits behind the earlobe and tightens with a screw. Also, an earring that uses this type of attachment.
noun 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.
noun 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.
noun The effect of putting backspin on the cue ball.
noun A powerful shot that imparts a spin to the ball.
noun A half-volley executed by holding the racket loosely and swinging it straight at the ball.
noun A masonry abutment on an arch that is wedge-shaped in order to transmit the thrust downward.