A male holding the highest hereditary title in the British and certain other peerages, ranking just below a prince. The Duke of Cambridge attended the royal event with his family.
A nobleman of the highest rank in some European countries. The duke was known for his vast estates and influence in the region.
A leader or chief, especially in a military context (historical usage). The duke led his troops into battle with great courage.
A fist (slang, usually used in the plural “dukes”). He warned his rival to put up his dukes before the first punch was thrown.