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Definition of Duncan
1. Noun. United States dancer and pioneer of modern dance (1878-1927). 
Medical Definition of Duncan
1. Surname of boys afflicted with what is now known as Duncan's disease. (05 Mar 2000)
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1. Noun. United States dancer and pioneer of modern dance (1878-1927). 
1. Surname of boys afflicted with what is now known as Duncan's disease. (05 Mar 2000)