a roughly built hut or cabin
简陋木屋, 棚屋。
no obj.(shack up)
informal move in or live with someone as a lover
〈非正式〉同居。
词源
late 19th cent.: perhaps from Mexican jacal, Nahuatl xacatli 'wooden hut'. The early sense of the verb was 'live in a shack' (originally a US usage).