Definition of chemis in US English:

chemis

noun

Scottish
historical
  • The chief mansion or manor house of an estate.

Origin

Late Middle English. From Middle French (Normandy) chymois, chemois chief country house or dwelling, mansion house, reduced variants of Middle French (Picardy and Normandy) chief mes, chief mais, etc. from post-classical Latin caput mansus, caput mansi from classical Latin caput head + post-classical Latin mansus, mansi, genitive of mansus (declined as 4th or 2nd declension respectively).