ha·zel·nut /ˈhezəlˌnʌt/
  榛實
  Ha·zel·nut n.  The nut of the hazel.
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  hazelnut
       n 1: any of several shrubs or small trees of the genus Corylus
            bearing edible nuts enclosed in a leafy husk [syn: hazel,
             hazelnut tree]
       2: nut of any of several trees of the genus Corylus [syn: filbert,
           cobnut, cob]