A male holding the highest hereditary title in the British and certain other peerages. A sovereign prince ruling a duchy in some European countries.
From Latin 'dux' (leader, commander), the noun form of 'ducere' (to lead). The word passed through Old French 'duc' into Middle English as 'duke' around 1200. Originally, a dux was a military commander who literally led troops, and this evolved into a noble title for one who leads a territory.
A 'duke' is literally just 'a leader' — the title comes straight from the Latin word for someone who leads! This makes 'duke' the most direct descendant of 'ducere,' while its cousins like 'conduct' and 'educate' took on more specific meanings about different types of leading.
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