What is "racked off"

Usage examples of "racked off".

At scarce thirty, he had already reduced his strength of appetite down to a wretched dependence on forc'd provocatives, very little seconded by the natural power of a body jaded and racked off to the lees by constant repeated over-draughts of pleasure, which had done the work of sixty winters on his springs of life: leaving him at the same time all the fire and heat of youth in his imagination, which served at once to torment and spur him down the precipice.