The Collaborative International Dictionary of English v.0.48:

Cackle \Cac"kle\, v. i. [imp. & p. p. Cackled (-k'ld); p. pr.
   & vb. n. Cackling.] [OE. cakelen; cf. LG. kakeln, D.
   kakelen, G. gackeln, gackern; all of imitative origin. Cf.
   Gagle, Cake to cackle.]
   1. To make a sharp, broken noise or cry, as a hen or goose
      does.
      [1913 Webster]

            When every goose is cackling.         --Shak.
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   2. To laugh with a broken noise, like the cackling of a hen
      or a goose; to giggle. --Arbuthnot.
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   3. To talk in a silly manner; to prattle. --Johnson.
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The Collaborative International Dictionary of English v.0.48:

Cackling \Cac"kling\, n.
   The broken noise of a goose or a hen.
   [1913 Webster] Cacochymia