Buxema

Etymology
, clipping of, likely via Old , compare modern. Supposedly found also in the form Buxemium, in a papal diploma from 1168. The grapheme ⟨x⟩ is here employed for as many instances of  in Sicilian do derive from a Latin, as for example. The grapheme was also widely used in Ibero-Romance languages with the same scope.

Etymology
From.