noun
duchess
DUCH-us/ˈdʌtʃəs/
A woman who holds the rank of duke or is married to a duke.
The duchess wears a ducal coronet and formal robe.

Etymology
Latin dux meant a leader or commander before becoming a noble title. The feminine ending makes duchess the corresponding title for a woman, whether ruling herself or holding the title through marriage.
In context
The duchess asked the duke if it would be proper to go out to receive her, as she was a countess and a person of rank.
More examples
- She inherited the title of duchess.
- The duke and duchess greeted the guests.
- A portrait of the duchess hung in the hall.
Forms
duchess · duchesses
Similar words
- duke
- The corresponding male title.
- countess
- A different rank of noblewoman.