Flophouse

[Kit]

Any house/apartment/frat house/trailer/etc. which is used for individuals to crash (sleep, chill, hang out, lurk, etc.) for a period of time. In order to crash, one must not actually live there (e.g. have their name on the lease, own said flophouse, etc.). Flophouses are typically used by college students, drug addicts, transients, vagrants, or other unsavory characters.
A flophouse may also be the home owned by the parents of a college student, who after being away at college, wishes to live as if he/she is still at college (e.g. staying out all night, returning just to crash at mom and dads house, then leaving again), rather than conforming to the pre-college rules.

[Tanya Shivari]

A [run-down] [boarding] house for bums, [hobos], and other transients. Not used anymore.

[Julian]

[Another word] for [whorehouse].

[Zipporah Schumaker]

A [house] in [which one] might [flop].

[Ernesto]

A dosshouse.

[Rihanna]

A cheap hotel or rooming house.