Thompson
nounUK /ˈtɒmp.sən/ · US /ˈtɑmp.sən/
Etymology Variant of Thomson, from Tom + -son, originally meaning "son of Thomas". In some instances of people so named, a calque of Scottish Gaelic MacTamhais (“McTavish”); also an anglicisation of the Gaelic name MacTamhais, meaning "son of Thomas".
1
A member of a Salish people of British Columbia.
2
Engineering, Firearms, Government, Military, Natural sciences, Physical sciences, Politics, Tools, War, Weaponry Abbreviation, Ellipsis Ellipsis of Thompson submachine gun (“Tommy gun”).