{ } n. [ Buncombe a county of North Carolina. ] Speech-making for the gratification of constituents, or to gain public applause; flattering talk for a selfish purpose; anything said for mere show. [ Cant or Slang, U.S. ] [ 1913 Webster ]

All that flourish about right of search was bunkum -- all that brag about hanging your Canada sheriff was bunkum . . . slavery speeches are all bunkum. Haliburton. [ 1913 Webster ]

To speak for Buncombe, to speak for mere show, or popularly. [ 1913 Webster ]

☞ “The phrase originated near the close of the debate on the famous ‘Missouri Question, ' in the 16th Congress. It was then used by Felix Walker -- a naïve old mountaineer, who resided at Waynesville, in Haywood, the most western country of North Carolina, near the border of the adjacent county of Buncombe, which formed part of his district. The old man rose to speak, while the house was impatiently calling for the ‘Question, ' and several members gathered round him, begging him to desist. He persevered, however, for a while, declaring that the people of his district expected it, and that he was bound to ‘make a speech for Buncombe.'” W. Darlington. [ 1913 Webster ]

v. t. [ 1st pref. un- + combine. ] To separate, as substances in combination; to release from combination or union. [ R. ] Daniel. [ 1913 Webster ]