a rough cabin; shanty.

Informal . radio shack. ?

shack up, Slang .

to live together as husband and wife without being legally married.

to have illicit sexual relations.

to live in a shack

He's shacked up in the mountains.

noun

cabin , camp , cottage , hut , lean-to , shed , shelter , small house , tiny house , hovel , shanty , (colloq.) vagabond , loafer , tramp