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Robertson screw
A type of screw having a square recess in the head.
screw threads
plural of screw thread
screw thread
(engineering) A helical ridge formed around a cylinder, or a helical groove formed around the inner wall of a bore, used mostly on fasteners and their connection points.
screw back
(sports, billiards, snooker, pool) To cue the cue ball in such a way as to impart backspin. On impact, the ball will follow a reverse trajectory according to the spin.
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screw shoe
A regular shoe with screws (1/4 to 3/8 inch) screwed into the bottom to give it grip while running on ice and snow.
color screw
(Magic: The Gathering) The condition of having an insufficient supply of the correct color of mana.
have one's head screwed on
(colloquial) To be a sensible thinker capable of making sound decisions.
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have one's head screwed on straight
Alternative form of have one's head screwed on
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have one's head screwed on right
Alternative form of have one's head screwed on
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