Noun
cellmate (plural cellmates)
A person with whom one shares a prison cell.
Synonym: (slang) celly
After Alex's fellow cellmates blame him for beating a troublesome cellmate to death, he is chosen to undergo an experimental behaviour-modification treatment called the Ludovico Technique in exchange for having the remainder of his sentence commuted. Source: Internet
As we sleep 3-feet apart from each other and with our cellmate sick, or our neighbor sick, we are just sitting time bombs waiting for when this is going to happen to me. Source: Internet
A gruff alien woman, Nail is Jyn Erso’s cellmate in Wobani’s grim LEG-817 labor camp. Source: Internet
Brock's one-time cellmate Cletus Kasady is exposed to the symbiote and transforms into a psychotic killer strong enough that Spider-Man and Venom have often been forced to join forces to defeat him. Source: Internet
Eugene Brown (Cuba Gooding, Jr.) was so worried about returning to his neighborhood in inner-city Washington, DC after serving 17 years for bank robbery that he shared his concern with his cellmate Searcy (Dennis Haysbert). Source: Internet
There is some reconciliation between them when Luthor discovers he was an unwitting party to a conspiracy against Lena, which was masterminded by his cellmate "Sam", who wanted revenge against Colby. Source: Internet