1. [early 19C+] a genial old fool, a description more affectionate than critical; thus often as old buffer.
2. [mid-18C+] an eccentric, a fool, used with a degree of contempt.
3. [late 18C–early 19C] an inn-keeper.
4. [mid-19C] a tradesman.
5. [late 19C] as a term of address.