The Collaborative International Dictionary of English v.0.48:

Rack \Rack\, n. [See Wreck.]
   A wreck; destruction. [Obs., except in a few phrases.]
   [1913 Webster]

   Rack and ruin, destruction; utter ruin. [Colloq.]

   To go to rack, to perish; to be destroyed. [Colloq.] "All
      goes to rack." --Pepys.
      [1913 Webster]