资料来源 : Webster's Revised Unabridged Dictionary (1913)

Hawhaw \Haw*haw"\, v. i. [Of imitative origin.]
   To laugh boisterously. [Colloq. U. S.]

         We haw-haw'd, I tell you, for more than half an hour.
                                                  --Major Jack
                                                  Downing.