[1] : The Collaborative International Dictionary of English v.0.48

rack \rack\, v. i. imp.  p. p. racked ra^kt; p. pr. 
   vb. n. racking. see rack that which stretches, or
   rock, v.
   to amble fast, causing a rocking or swaying motion of the
   body; to pace; -- said of a horse. --fuller.
   1913 webster
see also:
racked racking rack rock 

[2] : The Collaborative International Dictionary of English v.0.48

racking \rack"ing\, n. naut.
   spun yarn used in racking ropes.
   1913 webster

[3] : WordNet (r) 2.0

racking
     adj : causing great physical or mental suffering; "a wrenching
           pain" syn: wrenching
see also:
wrenching 

[4] : Moby Thesaurus II by Grady Ward, 1.0

46 moby thesaurus words for "racking":
   acute, afflictive, agonizing, atrocious, barbarous, biting,
   consuming, cramping, cruel, desolating, distressing, excruciating,
   ferocious, fierce, gnawing, grave, griping, hard, harrowing, harsh,
   heartbreaking, heartrending, heartsickening, heartwounding,
   hurtful, hurting, inhuman, painful, paroxysmal, piercing, poignant,
   pungent, rending, savage, severe, sharp, shooting, spasmatic,
   spasmic, spasmodic, stabbing, stinging, tearing, tormenting,
   torturing, torturous

Racking >> R Words
Racking, definition of term: Racking
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