1. a flat, typically one that is well appointed or used for holidays: "self-catering holiday apartments"
▪ a suite of rooms forming one residence; a flat: "the family lived in a rented apartment"Similarpenthouseflathome unitinformal:crib
▪ a block of apartments: "a district of six-storey apartments arranged along narrow streets"
▪ a set of private rooms in a very large house:"the Imperial apartments"Similarsuite (of rooms)set of roomsroomschambersliving quartersaccommodation
Word Originmid 17th century (denoting a private suite of rooms): from French appartement, from Italian appartamento, from appartare ‘to separate’, from a parte ‘apart’.