Dux
[dʊks]Meaning
Latin for "leader" or "general"; later also duke and its variant forms.
Background Story
Dux is Latin for "leader", from the noun dux, ducis, meaning "leader, general". It later came to mean duke and its variant forms, such as doge and duce. During the Roman Republic and the first centuries of the Roman Empire, dux could refer to anyone who commanded troops, whether Roman generals or foreign leaders, but it was not a formal military rank.

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