The Nuttall Encyclopedia
An instrument of torture; consisted of an oblong wooden frame, fitted with cords and levers, by means of which the victim's limbs were racked to the point of dislocation; dates back to Roman times, and was used against the early Christians; much resorted to by the Spanish Inquisition, and also at times by the Tudor monarchs of England, though subsequently prohibited by law in England.
Wood, James, ed. Entry for 'Rack'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/r/rack.html. Frederick Warne & Co Ltd. London. 1900.