slavery, servitude, bondage, thraldom
penal servitude, hard labour, drudgery
bondage, servitude, slavery, yoke
debt bondage, complete economic dependence
kabala (debt-bond deed)
Его отправили на каторгу за преступление.
He was sent to penal servitude for his crime.
Каторга длилась несколько долгих лет.
The penal servitude lasted for several long years.