1907, "bald person," from egg (n.) + head. Sense of "intellectual" is attested from 1918, among Chicago newspapermen; popularized by U.S. syndicated columnist Stewart Alsop in 1952 in ref. to Adlai Stevenson's presidential campaign.
n. an intellectual person. : The eggheads aren't exactly taking over the world.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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