Dunbar, WilliamPronunciation: /dʌnˈbɑː/Definition of Dunbar, William (circa 1456-circa 1513), Scottish poet. He was the author of satires such as the political allegory ‘The Thrissill and the Rois’ ( ‘The Thistle and the Rose’, 1503) and of elegies such as ‘Lament for the Makaris’.