Definitions of Thompson:

• noun:   English physicist (born in America) who studied heat and friction; experiments convinced him that heat is caused by moving particles (1753-1814)
• noun:   United States classical archaeologist (born in Canada) noted for leading the excavation of the Athenian agora (1906-2000)
• name:  A surname (very common: 1 in 371 families; popularity rank in the U.S.: #17)