cellmate

[ sel-meyt ]

/ ˈsɛlˌmeɪt /

a fellow inmate in a prison cell.

Origin of cellmate

cell¹ + mate¹

As he described the case of his cellmate Ibrahim Dewari, the determination to help those he left behind resurfaced.

Interview With Canadian Filmmaker John Greyson Following His Release from Cairo's Tora Prison |Jesse Rosenfeld |October 11, 2013 |DAILY BEAST
She refuses to discuss her current cellmate, also an American, except to say they are friends.

Knox's Powerful Fan |Barbie Latza Nadeau |October 20, 2010 |DAILY BEAST
Ferrell: We eat our lunch in our cell, so the answer would be my cellmate.

Catching Up With the Hipster Grifter |Natasha Vargas-Cooper |November 11, 2009 |DAILY BEAST
For cellmate he had Barthlet Green, who parted from him only to meet an agonizing death in the flames, as an arch-heretic.

Historic Ghosts and Ghost Hunters |H. Addington Bruce

But for a long time he could not get used to the snoring of his cellmate.

Local Color |Irvin S. Cobb
He even came to have a sort of sense of comradeship for his cellmate.

Local Color |Irvin S. Cobb
His cellmate, by answering to the name of "Mirov," had given away their nationality!

Tom Swift and the Electronic Hydrolung |Victor Appleton