duke
US /duːk/
UK /duːk/

1.
2.
dük
a nobleman of the highest hereditary rank in the British and certain other peerages, ranking below a prince and above a marquess
:
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The Duke of Edinburgh is a title held by a member of the British royal family.
Edinburgh Dükü, İngiliz kraliyet ailesinin bir üyesi tarafından taşınan bir unvandır.
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He inherited the title of duke from his father.
Dük unvanını babasından miras aldı.