They shack up in an abandoned motel with three feral teen boys, one of whom Lily develops a romantic relationship with.
Supermodel Roommates: Models Cara Delevingne and Georgia May Jagger are about to shack up….
For many, many good reasons, school is not an ideal time to shack up with your soul mate.
1878, American English and Canadian English, of unknown origin, perhaps from Mexican Spanish jacal, from Nahuatl xacalli "wooden hut." Or perhaps a back-formation from dialectal English shackly "shaky, rickety" (1843), a derivative of shack, a dialectal variant of shake (v.). Another theory derives shack from ramshackle.
Slang meaning "house" attested by 1910. In early radio enthusiast slang, it was the word for a room or office set aside for wireless use, 1919, perhaps from earlier U.S. Navy use (1917). As a verb, 1891 in the U.S. West in reference to men who "hole up" for the winter; from 1927 as "to put up for the night;" phrase shack up "cohabit" first recorded 1935 (in Zora Neale Hurston).
shack up (1940s+)
[fr shack, ''hut, shanty,'' found by 1878, probably fr earlier shackle fr American Spanish jacal fr Aztec xacalli]