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When some wished to abolish this law, Thraseas, one of the philosophers of high repute, rose to address the Senate to demand that the law be maintained The Ergastulum.=--A subterranean prison, lighted by narrow windows so high that they could not be reached by the hand, was called the ergastulum.— History Of Ancient Civilization
If, notwithstanding, the tillage of the fields by means of chained slaves appeared in subsequent times as a distinct system, and the labourers' prison (-ergastulum-)--an underground cellar with window-aperatures numerous but narrow and not to be reached from the ground by the hand (Colum.— The History of Rome (Volumes 1-5)
The hybrid Greek name for the workhouse (-ergastulum-, from --ergaszomai--, after the analogy of -stabulum-, -operculum-) is an indication that this mode of management came to the Romans from a region where the Greek language was used, but at a period when a thorough Hellenic culture was not yet attained 12.— The History of Rome (Volumes 1-5)
"In the ergastulum, your honour, with the furca on his neck."— The Last Galley Impressions and Tales

Century Dictionary (1)
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