noun
prison labor camp; prison labour camp
A facility where prisoners perform hard labor as part of their sentence. This term is historical and legal in nature, referring to a specific type of penal institution.
かつては、囚人たちが労役場で過酷な労働を強いられた。
In the past, prisoners were forced to perform harsh labor at the prison labor camp.
Compound of 労役 (hard labor) and 場 (place). The exact historical derivation is uncertain, but the term is conventionally associated with penal labor facilities.