shack
/ʃæk; ʃæk/ n
roughly built shed, hut or house 简陋的棚子、 小屋或房子. shack, v (phr v) shack up (with sb/together) (Brit sl 俚) (esp of a couple) live together although not married （尤指情侣）未婚而同居
They've decided to shack up together in her flat. 他们决定在她的公寓里同居.