simple past tense and past participle of confine
"The suspect was confined to his cell until further notice."
In plain English: To confine something means to keep it within specific limits so that it cannot move freely outside those boundaries.
"The floodwaters confined us to our basement for two days."
not invading healthy tissue
"The tumor remained confined to its original site without spreading into nearby healthy tissue."
not free to move about
"The patient was confined to bed rest for several days due to a severe infection."
being in captivity
"The tiger was confined to its cage at the zoo after escaping into the city park."
Not free to move.
"The injured athlete was confined to his bed for several days while he recovered."