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Robertson screw

/ ˈrɒbətsən /

noun

  1. a screw having a square hole in the head into which a screwdriver with a square point ( Robertson screwdriver ( trademark )) fits


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Word History and Origins

Origin of Robertson screw1

C20: after its inventor P. L. Robertson (1896–1951), a Canadian industrialist

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RobertsonRobert's Rules of Order