IPA: //ˈbʌŋ.kəm//
KK: /bʌŋkəm/
Nonsense or empty talk that is intended to deceive or mislead.
The politician's speech was filled with buncombe, lacking any real substance.
Buncombe originates from a place name, Buncombe County in North Carolina, which became associated with political nonsense or insincere talk. The term is believed to have arisen during a speech by a congressman who was accused of speaking only for the benefit of his constituents in Buncombe County, thus leading to the meaning of empty or insincere rhetoric.
Imagine a politician speaking just to please their voters in a specific place, which helps you remember that 'buncombe' refers to insincere or meaningless talk.