The Collaborative International Dictionary of English v.0.48:

Quackle \Quac"kle\, v. i. & t. [imp. & p. p. Quackled; p. pr.
   & vb. n. Quackling.] [Cf.Querken.]
   To suffocate; to choke. [Prov. Eng.]
   [1913 Webster]