duke
UK[djuːk]US[duːk]
n
A man of the highest hereditary rank in the British and certain other peerages.
n
A sovereign prince ruling a small state in continental Europe.
Etymology
The word 'duke' entered English in the 12th century from the Old French 'duc', meaning 'leader, prince'. This, in turn, derived from the Latin 'dux' (genitive 'ducis'), meaning 'leader, commander', a term used for a military commander of a province. The Latin root comes from the verb 'ducere', meaning 'to lead'. Thus, the core semantic journey is from the concrete action of "leading" an army, to the title of the military leader, and finally to the modern hereditary rank of a nobleman who historically held territorial and military authority.
Analysis
The entire word 'duke' is a simplex morpheme borrowed from Old French. Its functional role is as a complete noun stem.
Examples
The Duke of Edinburgh was a well-known public figure.
Historically, the duke commanded the region's military forces.
The small country was ruled by a grand duke.