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Many places have their own terminology so it isn't so surprising.
I wanted to point to this wikipedia article Battel[^], which we had to pay termly for lodging and food. When reading the article, it turns out that Battels was distinct to Commons (the latter being the name of the bill the student gets for the standard meals), and that some [other] Durham/Oxford colleges continue to use it in the way my college used Battel.
You live and learn!