| Clue | Source | Date |
|---|---|---|
| Room for a violent prisoner | ||
| Place to put someone who might hurt himself | New York Times | 02 Nov 2015 |
| Place to put someone who might hurt himself | ||
| Protective enclosure | ||
| Protective confiner | ||
| Overweight amoeba? | ||
| Room in " . . . Cuckoo's Nest" |