Burgomaster \Bur"go*mas`ter\, n. [D. burgemeester; burg borough + meester master; akin to G. burgemeister, b["u]rgermeister. See 1st {Borough}, and {Master}.] 1. A chief magistrate of a municipal town in Holland, Flanders, and Germany, corresponding to mayor in England and the United States; a burghmaster. 2. (Zo["o]l.) An aquatic bird, the glaucous gull ({Larus glaucus}), common in arctic regions.