Source : Webster's Revised Unabridged Dictionary (1913)

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