1911 Encyclopædia Britannica (1911)
“ Both (2) and (3) are in origin to be connected. The O. E. reccan and Ger. recken mean “to stretch,” and so “rack” means something stretched out, a straight bar or rail, especially a toothed bar gearing with a cog-wheel, a framework of bars, as in the cradle of upright bars in which fodder can be placed for cattle, and the instrument of torture, which in Ger. is Recke or Rackbank. The “rack” for torture was an oblong frame of wood, slightly raised from the ground, having at one end a fixed bar to which the legs were fastened, and at the other a movable bar to which the hands were tied. ”
