/ (ˈrɒbətsən) /
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trademark 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 Origin for Robertson screw
C20: after its inventor P. L. Robertson (1896–1951), a Canadian industrialist
Words nearby Robertson screw
Robert I, Robert II, Robert III, Roberts, Robertson, Robertson screw, Robert's Rules of Order, Robeson, Robeson, Paul, Robespierre, Robey
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012