ˈd(y)ükəl adjective
Etymology: Middle French, from Late Latin ducalis of a leader, from Latin duc-, dux leader + -alis -al — more at duke
1. : of, belonging to, or befitting a duke or dukedom
a ducal palace
2. : having the rank of a duke
a mere ducal husband — Time
• du·cal·ly -əlē, -li adverb