dux

noun
\ˈdəks, ˈdu̇ks\
plural duces\ ˈd(y)üˌsēz, ˈdüˌkās \ also duxes\ ˈdəksə̇z, ˈdu̇k-​ \

Definition of dux 

1 : a military commander stationed in a province of the later Roman Empire

2 British : the pupil at the academic head of a class or school

3 music : the first voice (see voice entry 1 sense 1b(4))to enter in a fugue (see fugue entry 1 sense 1b)or canon (see canon entry 1 sense 6) — compare comes

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History and Etymology for dux

Latin, literally, leader

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