physical labor; hard manual work; toil
Often implies forced or compulsory labor, such as penal labor or corvée, but can also refer to strenuous manual work in general.
The prisoners performed hard labor all day.
This job is just like toil.
prison labor camp; prison labour camp
Compound of 労 (labor, toil) and 役 (service, duty). The combination has long been used to refer to compulsory physical labor.