Camum, -i (n) – 1. a type of beer
Very little linguistic evidence for this word exists before 300 BCE, and it was not described until over a hundred years later. Camum likely represents a barley (rather than wheat) beer. It is possibly Celtic in origin. The Gauls, a Celtic tribe, drank several varieties of beer (Nelson 2001, 52-53).
Nelson, M.C. 2001. “Beer in Greco-Roman Antiquity.” Ph.D. dissertation, the University of British Columbia.