guf·faw /(ˌ)gəˈfɔ, ˈgʌˌfɔ/
  (vi.)(vt.)哄笑,狂笑哄笑,狂笑
  Guf·faw n. A loud burst of laughter; a horse laugh. “A hearty low guffaw.”
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  guffaw
       n : a burst of deep loud hearty laughter [syn: belly laugh]
       v : laugh boisterously [syn: laugh loudly]