| pen(noun, verb, free, obscure, informal) |
| cage(noun, verb, free, obscure, hide) |
| jail(noun, free, field, circle, ring) |
| confine(noun, verb, restrict, restraint, protect) |
| corral(noun, verb, obscure, hide, restrict) |
| immure(verb, free, obscure, hide, restrict) |
| prison(noun, run, free, field, can) |
| cell(noun, field, container, pen, room) |
| enclose(verb, cover, keep, free, block) |
| enclosure(noun, area, run, field, pen) |
| fence(noun, verb, separate, free, obscure) |
| pound(noun, run, field, pen, arena) |
| imprison(verb, restraint, circle, confine, ring) |
| penitentiary(noun, free, prison) |
| gaol(noun, prison) |
| henhouse(noun, pen) |
| hutch(noun, run, counter, field, box) |
| keep(noun, verb, free, confine, prison) |
| mew(noun, verb, free, restrict, circle) |
| shut in(verb, expression, phrasal verb, free, obscure) |