The Collaborative International Dictionary of English v.0.48:

Crippling \Crip"pling\ (-pl?ng), n.
   Spars or timbers set up as a support against the side of a
   building.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cripple \Crip"ple\, v. t. [imp. & p. p. Crippled (-p'ld); p.
   pr. & vb. n. Crippling (-pl?ng).]
   1. To deprive of the use of a limb, particularly of a leg or
      foot; to lame.
      [1913 Webster]

            He had crippled the joints of the noble child. --Sir
                                                  W. Scott.
      [1913 Webster]

   2. To deprive of strength, activity, or capability for
      service or use; to disable; to deprive of resources; as,
      to be financially crippled.
      [1913 Webster]

            More serious embarrassments . . . were crippling the
            energy of the settlement in the Bay.  --Palfrey.
      [1913 Webster]

            An incumbrance which would permanently cripple the
            body politic.                         --Macaulay.
      [1913 Webster]

WordNet (r) 3.0 (2006):

crippling
    adj 1: that cripples or disables or incapacitates; "a crippling
           injury" [syn: crippling, disabling, incapacitating]