The Collaborative International Dictionary of English v.0.48:

Keckle \Kec"kle\, v. t. [imp. & p. p. Keckled; p. pr. & vb. n.
   Keckling.] (Naut.)
   To wind old rope around, as a cable, to preserve its surface
   from being fretted, or to wind iron chains around, to defend
   from the friction of a rocky bottom, or from the ice.
   --Totten.
   [1913 Webster]