[koop, koo
p] 
| 1. | an enclosure, cage, or pen, usually with bars or wires, in which fowls or other small animals are confined for fattening, transportation, etc. |
| 2. | any small or narrow place. |
| 3. | Slang. a prison. |
| 4. | Sometimes Facetious. a cooperative, esp. the cooperative bookstore of a college or university. |
| 5. | to place in or as if in a coop; confine narrowly (often fol. by up or in). |
| 6. | Slang. (of a police officer) to park and sleep inside one's patrol car while on duty. |
| 7. | fly the coop, Informal. to run off; depart abruptly; escape: We stopped to see my sister, but she'd flown the coop. |