house arrest 
noun [mass noun]
The state of being kept as a prisoner in one’s own house, rather than in a prison: she was placed under house arrest...
- The primary distinction to be made is between terms of house arrest and incarceration.
- Mr Clarke has responded by taking powers to keep all terrorist suspects under house arrest outside prison.
- He was held in custody for almost four months and then released under house arrest.
- obstacle race
- obstacular
- obstant
- obstetric
- obstetrical
- obstetrically
- obstetrical toad
- obstetrician
- obstetrics
- obstinacy
- obstinance
- obstinancy
- obstinate
- obstinately
- obstinateness
- obstination
- obstipation
- obstreperous
- obstreperously
- obstreperousness
- obstruct
- obstructedly
- obstructer
- obstruction
- obstructionary