1 (used about a place or an area) that has houses rather than offices, large shops or factories （指地方或地区）以住宅为主的: They live in a quiet residential area. 他们住在一个幽静的住宅区。

2 that provides a place for sb to live 居住的；家居的: This home provides residential care for the elderly. 这家疗养院为老人提供住宿护理。