bachelor apartmentEnglishOxford New American Dictionarybachelor apartment /ˈbaCH(ə)lər əˈpärtmənt, ˈbætʃ(ə)lər əˈpɑrtmənt / ▸ noun North American an apartment occupied by a bachelor. ▪ an apartment consisting of a single large room serving as bedroom and living room, with a separate bathroom.