Robertson screw

/ (ˈrɒbətsən) /

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noun

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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Which sentence is correct?

His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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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