Dwight \dwi(g)-ht\ as a boy's name is pronounced Rhymes with light. It is of Flemish origin, and the meaning of Dwight is "white or blond". Variant of DeWitt. May possibly be a short form of the surname derived from Dionysius. Given fame in America by two Yale University presidents, and by President Dwight David Eisenhower. Baseball celebrity Dwight Gooden.