[a. Welsh fan (van), mutated form of ban height, occurring in place-names in South Wales, esp. in Brecknock.] A height or summit.
1871. Kingsley, At Last, ii. Flat ‘vans’ or hog-backed hills, and broad sweeps of moorland,… are as rare as are steep walls of cliff.
1905. A. R. Wallace, My Life, I. 249. The range of the great forest of Brecon, with its series of isolated summits or vans.
