Etymology
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Thompson (n.)

type of sub-machine gun, 1919, named for U.S. Gen. John T. Thompson (1860-1940), who conceived it and whose company financed it. Familiarly Tommy gun by 1929.

updated on October 10, 2017

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Definitions of Thompson from WordNet

Thompson (n.)
United States classical archaeologist (born in Canada) noted for leading the excavation of the Athenian agora (1906-2000);
Synonyms: Homer Thompson / Homer A. Thompson / Homer Armstrong Thompson
Thompson (n.)
English physicist (born in America) who studied heat and friction; experiments convinced him that heat is caused by moving particles (1753-1814);
Synonyms: Benjamin Thompson / Count Rumford
From wordnet.princeton.edu, not affiliated with etymonline.