Here is the entry on “slang” from the a guidebook that is used at the newspaper:
slang. Words bearing this label, in the dictionary or in this manual, are highly informal, usually flippant and often coined as a badge of membership in an in-group (for example, teenagers, the military, the underworld or the police).
To prone the body.
Flop house (1) - A cheap lodging house or any hobo hotel.
Flop house (2) - American slang for a cheap lodging house, especially one used by tramps.
Flop house (3) - A cheap transient hotel where a lot of men sleep in large rooms.
Flophouse News - A tabloid newspaper with Hobo and Skidroad News and Bowery and Night-Life News.
Floppers - A tramp who pretends to have cerebral palsy or another muscle control disease.
Flunkey - Camp waiter.
Many thanks to all the doctors, nurses, medical staff, non-medical hospital staff and other insiders who have emailed their contributions. Some have been personally collected during my stints working in hospital labs. Some of these terms have been in annual reviews of medical slang written by Dr Adam Fox (who has charted the prevalence and decline of medical slang over the last several years) and printed in medical and nursing journals, in newspapers and featured by BBC News. Others have been popularised on TV dramas/series set in hospitals e.g. Casualty, Holby City and ER.